Redwood trees are the tallest plants on the earth，reaching heights of up to 100 meters．They are also known for their longevity，typically 500 to 1000 years，but sometimes more than 2000 years．A hundred million years ago，in the age of dinosaurs，redwoods were common in the forests of a much more moist and tropical North America．As the climate became drier and colder，they declined to a narrow strip along the Pacific coast of Northern Califomia．
The trunk of redwood trees is very strong and usually forms a single straight column．It is covered with a soft bark．This bark can be pretty thick，well over two feet in the more mature trees．It gives the older trees a certain kind of protection from insects，but the main benefit is that it keeps the center of the tree harmless from moderate forest fires because of its thickness．This fire resistant quality explains why the giant redwood grows to live that long．While most other types of trees are destroyed by forest fires，the giant redwood actually prospers because of them．
Moderate fires will clear the ground of competing plant life，and the rising heat dries and opens the ripe fruit of the redwood，releasing many thousands of seeds onto the ground below．
New trees are often produced from shoots，little baby trees，which form at the base of the trunk．These shoots grow slowly，fed by the root system of the “mother’’ tree．When the main tree dies，the shoots are then free to grow as full trees，forming a “fairy ring” of trees around the original tree．These trees，in turn，may give rise to more shoots，and the cycle continues．
小題1:Why were redwood trees easier to find in the forests of North America millions of years ago?
A．The trees were taller and stronger．
B．The soil was softer for seeds to develop．
C．The climate there was warmer and wetter．
D．The temperature was lower along the Pacific coast．
小題2:Which of the following is a function of the tree bark as mentioned in the passage?
A．It allows redwood trees to bear seeds．
B．It prevents redwood trees from attack by insects．
C．It helps redwood trees absorb water in the air．
D．It makes redwood trees more beautiful and appealing．
小題3:Why do redwood trees grow to live that long according to the passage?
A．They have heavy and straight tree trunks．
B．They are properly watered and catered to．
C．They are more resistant to fire damage than other trees．
D．They produce many young trees to maintain their life cycle．
小題4:How does a “fairy ring’’ form according to the passage?
A．By killing an old tree．B．By connecting root systems．
C．By inserting holes into old trees．D．By surrounding a mature tree．

小題1:C
小題2:B
小題3:C
小題4:D

試題分析：文章介紹紅杉的生長習(xí)性，它怎么抵御昆蟲和森林大火的侵害，怎么能夠存活的那么久。
小題1:細節(jié)題：從文章第一段的句子：A hundred million years ago，in the age of dinosaurs，redwoods were common in the forests of a much more moist and tropical可知在上百萬年前，北美的森林里面紅杉是很容易找到的，選C
小題2:細節(jié)題：從文章第二段的句子：It gives the older trees a certain kind of protection from insects，可知樹皮的功能是阻止紅杉被昆蟲侵害，選B
小題3:細節(jié)題：從第二段的句子：but the main benefit is that it keeps the center of the tree harmless from moderate forest fires because of its thickness．This fire resistant quality explains why the giant redwood grows to live that long．可知紅杉能生長那么久，是因為它能夠抵御森林大火的侵害，選C
小題4:細節(jié)題：從文章最后一段的句子：When the main tree dies，the shoots are then free to grow as full trees，forming a “fairy ring” of trees around the original tree．These trees，in turn，may give rise to more shoots，and the cycle continues．可知“fairy ring’’ 是通過包圍一顆成熟的樹形成的，選D
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科目：高中英語 來源：不詳 題型：閱讀理解

Against the supposition that forest fires in Alaska，Canada and Siberia warm the climate，scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sunlight into space.
This finding suggests that taking steps to prevent northern forest fires to limit the release of greenhouse gases may warm the climate in northern regions.Usually large fires destroyed forests in these areas over the past decade.Scientists predict that with climate warming，fires may occur more frequently over the next several centuries as a result of a longer fire season.Sunlight taken in by the earth tends to cause warming，while heat mirrored back into space tends to cause cooling.
This is the first study to analyze all aspects of how northern fires influence climate.Earlier studies by other scientists had suggested that fires in northern regions sped up climate warming because greenhouse gases from burning trees and plants were released into the atmosphere and thus trapped heat.
Scientists found that right after the fire，large amounts of greenhouse gases entered the atmosphere and caused warming.Ozone (臭氧) levels increased，and ashes from the fire fell on far­off sea ice，darkening the surface and causing more radiation from the sun to be taken in.The following spring，however，the land within the area of the fire was brighter than before the fire，because fewer trees covered the ground.Snow on the ground mirrored more sunlight back into space，leading to cooling.
“We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere，” scientists said.They tracked the change in the amount of radiation entering and leaving the climate system as a result of the fire，and found a measurement closely related to the global air temperature.Typically，fire in northern regions occurs in the same area every 80 to 150 years.Scientists，however，found that when fire occurs more frequently，more radiation is lost from the earth and cooling results.Specifically，they determined when fire returns 20 years earlier than predicted,0.5 watts per square meter of area burned are soaked up by the earth from greenhouse gases，but 0.9 watts per square meter will be sent back into space.The net effect is cooling.Watts are used to measure the rate at which energy is gained or lost from the earth.
小題1:According to the new findings，taking steps to prevent northern forest fires may________.
A．result in a warming climate
B．cause more forest fires
C．lead to a longer fire season
D．protect the forests there
小題2:The following are the immediate effects after a forest fire EXCEPT________.
A．large amounts of greenhouse gases enter the atmosphere
B．the levels of ozone which is a type of oxygen increase
C．snow on the ground mirrors more sunlight back into space
D．a(chǎn)shes from the fire fall on the ice and darken the surface
小題3:Earlier studies about northern forest fires________.
A．had analyzed all aspects of how northern fires influenced climate
B．had indicated that forest fires would pollute the atmosphere
C．had suggested that people should take measures to protect environment
D．had suggested that the fires would speed up climate warming
小題4:We can infer that forest fires in Alaska，Canada and Siberia may________.
A．warm the climate as the supposition goes
B．cool the climate by reflecting more sunlight into atmosphere
C．make more space for the growth of young trees
D．help to gain more energy rather than release more energy

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科目：高中英語 來源：不詳 題型：閱讀理解

Anyone who doubts if children are born with a healthy amount of ambition need spend only a few minutes with a baby eagerly learning to walk. No matter how many times the little ones stumble in their first efforts, most keep on trying, determined to master their amazing new skill. It is only several years later, many psychologists and teachers agree, that a good number of kids seem to lose their natural drive to succeed. For the parents of such kids, whose own ambition is often tied to their children's success, it can be a painful experience.
Figuring out why the fire went out is the first step. Assuming that a kid doesn't suffer from a learning disability, or isn't involved in some family crisis(危機) at home, many educators attribute a sudden lack of motivation to a fear of failure or classmate pressure.“Everything is within the kids' control；their intelligence is changeable,”says Lisa Blackwell, a research scientist at Columbia University. More than any teacher or workshop, Blackwell says,“Parents can play a key role in conveying this message to their children by praising their effort and progress rather than emphasizing their “smartness” or praising high performance alone. Most of all, parents should let their kids know that mistakes are a part of learning.”
Some experts say our education system, with its strong emphasis on testing and separation of students into different levels of ability, also bears blame for the disappearance of drive in some kids.“These programs shut down the motivation of all kids who aren't considered gifted and talented. They destroy their confidence,” says Jeff Howard, a social psychologist. Howard and other educators say it's important to expose kids to a world beyond homework and tests, through volunteer work, sports, hobbies and other extra­curricular activities.
“The problem of the issue is that many students experience education as irrelevant to their life goals and ambition,”says Michael Nakkual, a Harvard education professor. The key to getting kids to aim higher at school is to free them of the idea that class work is irrelevant, and to show them how doing well at school can actually help them fulfill their dreams beyond it. They need to understand that you have to learn to walk before you can run.
小題1:According to the passage, the parents of kids with no ambition ________.
A．don't do a very good job on teaching them to walk
B．a(chǎn)re to blame if the kids do poorly in school
C．feel pain because their own ambition is connected to their kids' success
D．should take part in extra­curricular activities with kids
小題2: The underlined part “the fire went out” probably means ________.
A．the motivation was suddenly lost
B．the fear of failure was suddenly gone
C．the learning disability was suddenly lost
D．the fire was suddenly gone
小題3:All the following can contribute to a sudden lack of ambition EXCEPT ________.
A．learning disabilityB．classmate pressure
C．emphasis on testingD．extra­curricular activities
小題4:What is the most important thing for parents in motivating their kids?
A．Punishing kids who don't display ambition.
B．Emphasizing smartness and high performance.
C．Telling kids that mistakes are a part of learning.
D．Praising the effort and progress they have made.

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科目：高中英語 來源：不詳 題型：閱讀理解

There are quite a few advantages of wearing school uniforms. The idea may seem disagreeable at first, but considering all the positive effects coming from wearing uniforms you would be more likely to enjoy them.
Teachers love school uniforms because it helps provide an orderly learning environment. Having students dressed in uniforms may teach them how to present themselves in a neat and professional manner. It gives students the opportunity to learn how to dress like young ladies and gentleman. And they can focus their attention on academics rather than style.
Purchasing (購買) school uniforms is easy and needs less hesitation and consideration. No matter what the school’s policy is, there are only specific essential (基本的) pieces to the wardrobe (服裝) that are necessary, so it won’t break the bank. A few wardrobe items can last a long time. Parents could also enjoy an easy morning, as it will take less time to choose a set of clothes for the school day.
Students wearing uniforms will feel less pressure about what to wear or not to wear when their classmates are dressed similarly. Getting dressed before school becomes less of a chore(瑣事) when students are limited in their choices, so there shouldn’t be any trouble about choosing an outfit for the day and getting ready quickly. Some students may not like the lack of individuality(個性) with a uniform, but some school dress code policies may offer them the opportunities to show their unique styles.
Uniforms today are also becoming trendier and can be seen in many areas of pop culture. Celebrities(名人)and fashion designers are using uniforms as inspiration for new looks which also appeal to students.
小題1:What would be the best title for the text?
A．How to dress properly.
B．The history of school uniforms.
C．The advantages of school uniforms.
D．How to deal with pressure in school.
小題2:Teachers think that wearing school uniforms ________________.
A．is just a tradition that students should follow
B．makes students feel less pressure in study
C．helps students put more effort into their studies
D．makes students lose their independence and identity
小題3:The underlined part “it won’t break the bank” in Paragraph 3 probably means “__________”.
A．a(chǎn) school uniform doesn’t cost a lot of money
B．a(chǎn) school uniform should be worn every day
C．parents will have to go to the bank many times
D．parents who work in a bank can afford the uniform
小題4:We can infer from the text that school uniforms _________.
A．a(chǎn)re not popular with fashion designers
B．were not accepted by parents in the past
C．will be designed by students themselves
D．will be more fashionable in the future
小題5:The author’s attitude towards students’ wearing school uniforms is ___________.
A．negative B．supportive C．doubtful D．unclear

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科目：高中英語 來源：不詳 題型：閱讀理解

Most people know precious gemstones (寶石) by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It’s more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone’s origin.
Beneath the surface of a gemstone, on the tiny level of atoms and molecules（分子）, lie clues (線索) to its origin. At this year’s meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers (激光) to clarify these clues and identify a stone’s homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. “With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from,” McManus told Science News.
Some gemstones, including many diamonds, come from war-torn countries. Sales of those “blood minerals” may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones.
To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles（微粒）called electrons separate from atoms.
The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements（元素）produce different patterns, but McManus and her team say that gemstones from the same area produce similar patterns. Materialytics has already collected patterns from thousands of gemstones, including more than 200 from diamonds. They can compare the light pattern from an unknown gemstone to patterns they do know and look for a match. The light pattern acts like a signature, telling the researchers the origin of the gemstone.
In a small test, the laser technique correctly identified the origins of 95 out of every 100 diamonds. For gemstones like emeralds and rubies, the technique proved successful for 98 out of every 100 stones. The scientists need to collect and analyze more samples, including those from war-torn countries, before the tool is ready for commercial use.
Scientists like Barbara Dutrow, a mineralogist from Louisiana State University in Baton Rouge, find the technique exciting. “This is a basic new tool that could provide a better fingerprint of a material from a particular locality,” she told Science News.
小題1:We learn from Paragraph 1 that __________________.
A．a(chǎn)n emerald and a ruby are names of diamonds.
B．it’s not difficult to tell where the gem was mined.
C．a(chǎn)ppearances help to identify the origin of gemstones.
D．diamonds from different places may appear the same.
小題2:Why did the U.S. government pass law that requires companies selling gemstones to determine the origins of their stones?
A．To look for more gemstones.
B．To encourage violent civil wars.
C．To reduce the trade in blood minerals.
D．To develop the economy.
小題3:Which of the following facts most probably helps McManus and her team in identifying the origin of stones?
A．Heat can turn ice into water or water into steam.
B．Gemstones from the same area produce similar light patterns.
C．Laser can changes a miniscule part of the gemstone into plasma.
D．Materialytics has already collected patterns from thousands of gemstones.
小題4:From the last two paragraphs, what can be inferred about the laser technique?
A．It is ready for commercial use.
B．People can use the new tool to find more gemstones.
C．It can significantly reduce the gemstones trade in blood minerals.
D．It will bring about a revolutionary change in identifying the origin of minerals.
小題5:The author wrote this passage mainly to ________.
A．tell us how to identify the origin of diamonds.
B．introduce a laser technique in identifying a stone’s origin
C．prove identifying the origin of gemstones are difficult
D．a(chǎn)ttract our attention to reducing trade in blood minerals

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科目：高中英語 來源：不詳 題型：閱讀理解

Although cats may be one of the most popular pets today, little is known about how and when humans and cats set up their close relationship.
The earliest evidence for human–cat interaction dates back to prehistoric Cyprus（史前塞浦路斯）, where the remains of a wild cat and a human — dated 9,500 years old — were found buried together.
A new study in the Proceedings of the National Academy of Sciences has confirmed the first direct evidence of a human–domestic cat relationship among Chinese farmers 5,300 years ago. Researchers studied the bones of cats, dogs, deer and other animals unearthed in an excavation (挖掘) near a village in Central China. By using some ways, scientists showed that the cats were living on a mostly millet(黍)–based diet, just like the domesticated dogs and pigs from the site.
"The most reasonable explanation for a high consumption of millet–based food is that the cats had formed a stable and mutual relationship with humans and could easily feed on rodents (嚙齒動物) around human villages, find leftover food or even have been fed by people intentionally," said Hu Yaowu from the Chinese Academy of Sciences in Beijing, whose research focuses on the relationship between humans and domesticated animals.
"It is very interesting for us to find the consumption of millet-based foods by the cats, since this kind of evidence had long been missing.” Hu explains. Since cats usually eat meat, such a diet would be unexpected, unless the cats were being fed by people, the study argues. The researchers also found that one of the cats survived to reach old age, implying that it had a safe place to live and enough to eat.
Why the farmers wanted to keep cats nearby or make them "pets" could be answered by other evidence. Chinese archaeologists found some storage containers were specifically designed to keep out rodents — a vermin (害獸) that cats could certainly have helped with.
The simplified theory is that rats were attracted to the food of farmers, and so were harmful to farmers. Cats were attracted to the rats, and so farmers formed a mutually beneficial relationship with cats, taking care of them in return for pest control.
小題1:The evidence found in the remains dating back to prehistoric Cyprus means         .
A．human made cats pets as early as 9,500 years ago
B．human interacted with cats very early
C．cats didn’t appear until prehistoric Cyprus
D．when cats became domesticated
小題2:Apart from cats, Hu Yaowu and his teams may also study         .
A．the preventions of pests from grains
B．the history of Chinese farming
C．the dogs and pigs
D．the ways to keep pets
小題3:Which of the following is NOT the evidence of Chinese farms’ keeping cats?
A．Cats didn’t feed on meat.
B．The cats consumed large amounts of millet–based foods.
C．One of the cats survived to reach old age.
D．Some storage containers were specifically designed to keep out rodents.
小題4:What are the reasons for farmers to keep cats?
A．Helping keep other domesticated animals.
B．Not letting cats eat food.
C．Supplying meat for human.
D．Helping reduce the amount of pests.
小題5:In which part of a newspaper would be the passage most probably appear         .
A．EntertainmentB．Environment
C．Human and ScienceD．Life and fashion

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科目：高中英語 來源：不詳 題型：閱讀理解

What would it be like to take a walk on the surface of Mars? If you could design the tallest building in the world, what would it look like? Do you dream of being the next J．K. Rowling? This summer, you can experience all of these things, and more. All you need is an Internet connection and your imagination.
A recent study by the Kaiser Family Foundation found that kids spend an average of 1 hour and 29 minutes online each day. Many kids like to use that time to chat with friends, play games or check e­mails. But the next time you get on the Web, try exploring the world instead. “With the Internet, you can go back 11,000 years in time, or go 11,000 kilometers across the planet.” said Russell, Web search expert of Google. “The whole scope of history and the world is open to you.”
There is a wealth of information to be found online. For example, if your family is going on vacation somewhere，do a quick online search on the area before you even get in the car. “What's the background of the place; what's the history？” says Russell. “I like to tell my kids, ‘Whenever you have a question, whenever you have a doubt, search it out.’”
Ready to launch a virtual journey of your own? Here are a few starting points to get you thinking and to help you on your way. You can invite your parents along for the ride, too. Always ask for permission before downloading programs and software onto your computer. And check with a parent or an adult before visiting a new Web site.
Navigate the world in 3­D with Google Earth. Begin in outer space and zoom(快速移動) into the streets of any city, from Hong Kong to San Francisco. Or visit ancient monuments, watch the changing rainforests over time, and dive underwater to explore tropical reef.
With the Moon in Google Earth tool, you can walk in Neil Armstrong's famous footsteps. Take a guided tour of the moon's surface with Armstrong's fellow shuttle mate astronaut Buzz Aldrin.
When you're exploring that part of the solar system, hop on over to the Red Planet with Google Mars. There, you can move very quickly around the surface and see images from the Mars Rovers.
小題1:The author uses questions in the first passage to ________.
A．introduce the topic of the paragraph
B．question the possibility of realizing the dream
C．a(chǎn)ttract the readers' attention
D．let the readers answer it
小題2:How do you travel around the world in a day according to the passage?
A．By taking the time shuttle.
B．By making use of the Internet
C．By watching 3­D films.
D．By finding a tourism company in Google
小題3:Russell thought ________.
A．the students spent too much time on the Internet
B．the students shouldn't chat and play games online
C．the students could solve their problems through the line
D．the students should learn knowledge instead of chatting online
小題4:What's the purpose of the passage?
A．Encourage the kids to spend more time online.
B．Encourage the kids to do some research on science.
C．Encourage the kids to learn to use the computer.
D．Encourage the kids to explore the world online.

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科目：高中英語 來源：不詳 題型：閱讀理解

Humans have sewn by hand for thousands of years. It was said that the first thread was made from animal muscle and sinew (腱). And the earliest needles were made from bones. Since those early days, many people have been involved in the process of developing a machine that could do the same thing more quickly and with greater efficiency.
Charles Wiesenthal, who was born in Germany, designed and received a patent on a double-pointed needle that eliminated the need to turn the needle around with each stitch (縫合) in England in 1755. Other inventors of that time tried to develop a functional sewing machine, but each design had at least one serious imperfection. ,科Frenchman Barthelemy Thimonnier finally engineered a machine that really worked. However, he was nearly killed by a group of angry tailors when they burned down his garment factory. They feared that they would lose their jobs to the machine.
American inventor Elias Howe, born on July 9, 1819, was awarded a patent for a method of sewing that used thread from two different sources. Howe’s machine had a needle with an eye at the point, and it used the two threads to make a special stitch called a lockstitch. However, Howe faced difficulty in finding buyers for his machines in America. In frustration, he traveled to England to try to sell his invention there. When he finally returned home, he found that dozens of manufacturers were adapting his discovery for use in their own sewing machines.
Isaac Singer, another American inventor, was also a manufacturer who made improvements to the design of sewing machines. He invented an up-and-down-motion mechanism that replaced the side-to-side machines. He also developed a foot treadle(腳踏板) to power his machine. This improvement left the sewer’s hands free. Undoubtedly, it was a huge improvement of the hand-cranked machine of the past. Soon the Singer sewing machine achieved more fame than the others for it was more practical, it could be adapted to home use and it could be bought on hire-purchase. The Singer sewing machine became the first home appliance, and the Singer company became one of the first American multinationals.
However, Singer used the same method to create a lockstitch that Howe had already patented. As a result, Howe accused him of patent infringement（侵犯）. Of course, Elias Howe won the court case, and Singer was ordered to pay Howe royalties（版稅）. In the end, Howe became a millionaire, not by manufacturing the sewing machine, but by receiving royalty payments for his invention.
小題1:Barthelemy Thimonnier’s garment factory was burned down because _____________.
A．people did not know how to put out the fire
B．Elias Howe thought Thimonnier had stolen his invention
C．the sewing machines was couldn’t work finally
D．workers who feared the loss of their jobs to a machine set fire
小題2:Which of the following is NOT TRUE according to the passage?  
A．Singer is an American inventor and manufacturer.
B．The Singer sewing company became more practical.
C．The foot treadle helped to make the sewer’s hands free.
D．Singer made improvements to the design of sewing machines.
小題3:Why did the court force Isaac Singer to pay Elisa Howe a lifetime of royalties?
A．Because the judge was against Singer for his surly attitude.
B．Because Howe had already patented the lockstitch used by Singer.
C．Because Singer had borrowed money from Howe and never repaid it.
D．Because Singer and Howe had both invented the same machine.
小題4:Which of the following would be the best title for this passage?
A．A Stitch in Time Saves Nine
B．The Case between Howe and Singer
C．Patent Laws on the Sewing Machine
D．The Early History of the Sewing Machine

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科目：高中英語 來源：不詳 題型：閱讀理解

New research has revealed that which song drivers listen to can influence how safe they are on the roads.Among the top ten safest songs to drive to are Come Away With Me by Norah Jones，I Don't Want to Miss a Thing by Aerosmith and Tiny Dancer by Elton John.Each of the songs has an optimum tempo(最佳節(jié)奏) for safe driving，imitating the human heartbeat at around 60 to 80 beats per minute.The Scientist by Coldplay and Justin Timberlake's Cry Me a River also appeared in the top 10.
The study，conducted at London Metropolitan University，also revealed the type of songs that cause motorists to drive dangerously.Unsurprisingly，music that is noisy increases a driver's heart rate，which can be deadly.Fast beats cause excitement that can lead people to concentrate more on the music than on the road and to speed up to match the beat of the song.Styles of music were also measured during the experiment and revealed differences between male and female drivers.Hip­hop made a female driver drive far more aggressively，speeding up faster than male driver.The heavy metal music caused the fastest driving among males in the group while the dance music had the same effect among women.The male and female drivers who listened to the classical music drove the most irregularly.
The experiment involved eight people driving 500 miles each using the confused.com MotorMate app，which monitored driving behaviors through GPS technology.
小題1:What's the main idea of the whole passage?
A．Songs that drivers prefer to listen to on their way.
B．A study made by the confused.com MotorMate app.
C．What kind of songs the drivers should choose to listen to during driving.
D．Female drivers and male drives have different responses to the same music.
小題2:The underlined word “monitored” in the last paragraph means________．
A．controlledB．bannedC．modeledD．showed
小題3:．Which of the following statements is NOT true?
A．Tiny Dancer by Elton John appeared in the top 10.
B．Usually human hearts beat at around 60 to 80 beats per minute.
C．The classical music makes most drivers drive comfortably and safely.
D．The passage reveals appropriate music and improper music for drivers.
小題4:If there is another paragraph in the end of the passage，the author may mention________．
A．female and male drivers' popular tastes of music
B．how did the study carry out
C．why fast beat music is harmful to drivers
D．some music with optimum tempo for driver to enjoy

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