_______difficulties we may come across, we will help one another to overcome them
A. Whatever B. However
C. Whenever D. Wherever
科目：高中英語 來源：2014-2015學(xué)年四川成都樹德協(xié)進中學(xué)高二10月階段性考試英語試卷（解析版） 題型：閱讀理解
A recent study of ancient and modern elephants has come up with the unexpected conclusion that the African elephant is divided into two distinct (不同的) species
The discovery was made by researchers at York and Harvard universities when they were examining the genetic relationship between the ancient woolly mammoth and mastodon to modern elephants—the Asian elephant, African forest elephant and African savanna elephant
Once they obtained DNA sequences (序列) from two fossils (化石)，mammoths and mastodons the team compared them with DNA from modern elephants. They found to their amazement that modern forest and savanna elephants are as distinct from each other as Asian elephants and mammoths.
The scientists used detailed genetic analysis to prove that the African savanna elephants and the African forest elephants have been distinct species for several million years. The divergence of the two species took place around the time of the divergence of Asian elephants and woolly mammoths. This result amazed all the scientists.
There has long been debate in the scientific community that the two might be separate species but this is the most convincing scientific evidence so far that they are indeed different species.
Previously, many naturalists believed that African savanna elephants and African forest elephants were two populations of the same species despite the elephants’ significant size differences. The savanna elephant has an average shoulder height of 3.5metres while the forest elephant has an average shoulder height of 2.5metres. The savanna elephant weighs between six and seven tons, roughly double the weight of the forest elephant. But the fact that they look so different does not necessarily mean they are different species. However, the proof lay in the analysis of the DNA.
Alfred Roca, assistant professor in the department of Animal Sciences at the University of Minois, said, “We now have to treat the forest and savanna elephants as two different units for conservation purpose. Since 1950 all African elephants have been conserved as one species. Now that we know the forest and savanna elephants are two very distinct animals, the forest elephant should become a bigger priority (優(yōu)先)for conservation purpose .”
1.One of the fossils studied by the researchers is that of ________.
A. the Asian elephant B. the forest elephant
C. the savanna elephant D. the mastodon elephant
2.The underlined word “divergence” in paragraph 4means “________”
A. evolution B. exhibition C. separation D. examination
3.The researcher’s conclusion was based on a study of the African elephant’s ____________
A. DNA B. height C. weight D. population
4.What were Alfred Roca’s words mainly about?
A. The conversation of African elephants.
B. The purpose of studying African elephants
C. The way to divide African elephants into two units
D. The reason for the distinction of African elephants
5.Which of the following can be the best title for the passage?
A. Naturalist’s Belief about Elephants.
B. Amazing Experiment about Elephants
C. An Unexpected Finding about Elephants
D. A Long scientific Debate about Elephants
查看答案和解析>>
科目：高中英語 來源：2014-2015學(xué)年四川成都樹德協(xié)進中學(xué)高一10月階段考英語試卷（解析版） 題型：單項填空
With so many essays _______ ,he won’t have time to go shopping with his parents this afternoon.
A. writing B. written C. to write D. be written
查看答案和解析>>
科目：高中英語 來源：2014-2015學(xué)年四川中江龍臺中學(xué)高二上期中英語試卷（解析版） 題型：閱讀理解
Your schooldays should be some of the best and happiest days of your life. How can you gain the most from them, and ensure you do not waste this wonderful opportunity to learn?
Be positive about school. Don’t say things are difficult or boring. Be interested in school-life and your school subjects. Join lots of activities. Be quick to put your hand up. Go round the school with a big smile.
Expect to work. School is not a holiday camp. If you are not working, you are not learning, and you are wasting your time at school. Teachers cannot make everything enjoyable.
Keep fit. If you do not eat a good breakfast, you will be thinking about food in class. If you go to bed late and do not have enough sleep, you will be sleepy in class. Play some sports to keep your body strong.
Do today’s work today. Do not say you will do things tomorrow. If you get behind the class, it is very difficult to get back in front. You cannot finish a race if you rest all the time.
Don’t be too disappointed if things sometimes go badly. Everyone fails some tests, loses some matches and has bad days. Friends are not always perfect, and they sometimes say and do unpleasant things. Don’t let small problems seem very big and important.
Talk about problems. Sometimes they are only the result of misunderstanding. Don’t be too embarrasssed to ask for help. You are young. No one thinks you can do everything.
Plan your time. Don’t waste life lying in bed on Saturday morning. Go and play a sport, learn the piano, work on a project, read a book, practise English, or help someone with problems. There are always a lot of things to do.
Set targets. If your last grade was a D, work for a C. try to make progress bit by bit. Think of small targets: “I will speak in class four times this week”, “I will finish my project on Wednesday” or “I will get two more marks this week”.
Follow our advice, and have a happy school-life!
1.If Johnny wants to read comic(漫畫) books, not textbooks, he needs to read ________.
A. Expect to work.
B. Do today’s work today.
C. Plan your time.
D. Don’t be too disappointed if things sometimes go badly.
2.According to the passage, which of the following statements is Not true?
A. If you are not interested in things at school, you are likely to feel bored.
B. It’s not a shame to have problems and need help sometimes.
C. You won’t make good progress unless you set big targets
D. Having enough food and sleep will help us study better.
3. Why do you think the writer thinks it is good to put up your hand in class?
A. Because you will impress your teacher most this way.
B. Because other students will admire you.
C. Because it means that you will enjoy school and learn more.
D. Because your parents will feel happy if you do so.
查看答案和解析>>
科目：高中英語 來源：2014-2015學(xué)年四川中江龍臺中學(xué)高二上期中英語試卷（解析版） 題型：單項填空
It was in the hotel where my father works _______ I met the film star.
A. what B. that
C. when D. where
查看答案和解析>>
科目：高中英語 來源：2014-2015學(xué)年四川中江龍臺中學(xué)高一上期中英語試卷（解析版） 題型：閱讀理解
We all know that if we want to keep our body in good shape we have to do physical exercise regularly as well as be careful with what we eat. What we tend to forget is that this goes for our eyes as well. Medical science confirms that a diet rich in carotenoids (類胡蘿卜素) can help maintain good vision(維持好視力) and prevent against a number of eye diseases. Here's some advice about how to choose the right diet to keep your eyes healthy.
— Eat orange food. Fruits and vegetables with orange flesh are rich in carotenoids. In addition to carrots，oranges，pumpkins and sweet potatoes are also available. All of these contain high levels of carotenoids，which help to maintain good vision.
— Include dark green vegetables，such as spinach (菠菜) and broccoli (西蘭花) in your diet, to act as natural sunglasses. Recent scientific studies have shown that these vegetables can help block (阻擋) the damaging UV radiation(紫外線輻射)from the sun's rays.
— Prevent some eye diseases with orange juice, yellow corn, whole milk, nuts and leafy vegetables. These foods are good sources of vitamins A, C, D and E. All of these are necessary to good eye health.
— Increase your intake of omega?3 with some sea fish, and some other seafood. Omega-3 helps build cell walls and is especially beneficial to keeping eyes healthy .It also helps regulate the eye's internal pressure and helps the eye dry up excess fluid.
1.We can learn from the first paragraph that healthy food .
A．keeps eyes healthy
B．means you don't need exercise
C．can help cure eye diseases efficiently(有效地)
D．means people don't have to wear glasses
2.Why should people eat orange food according to the text？
A．It is beneficial to building cell walls in eyes.
B．It is more delicious than other food.
C．It is good for eyesight.
D．It is rich in various vitamins.
3.Which of the following can help block the damaging UV radiation from the sun's rays？
A．Pumpkins.B．Juice.
C．Nuts. D．Broccoli.
4.The purpose of the text is to tell people how to .
A．keep their body in good shape
B．choose a healthy diet for their eyes
C．prevent serious eye diseases
D．get natural sunglasses from food
查看答案和解析>>
科目：高中英語 來源：2014-2015學(xué)年四川中江龍臺中學(xué)高一上期中英語試卷（解析版） 題型：單項填空
--Mr.Smith is very strict his students,isn’t he?
--Yes,he is.He is strict_ work as well.
A．with; inB．in; about
C．in; withD．with; about
查看答案和解析>>
科目：高中英語 來源：2014-2015學(xué)年吉林省高一9月月考英語試卷（解析版） 題型：單項填空
She understood what I was talking about, ________ it was the first time we had spoken together.
A. whether B. even if
C. as if D. Since
查看答案和解析>>
科目：高中英語 來源：2014-2015學(xué)年內(nèi)蒙古巴彥淖爾市高二10月月考英語試卷（解析版） 題型：單項填空
Don’t have him ________ outside all the time.
A. stand B. to stand
C. stood D. standing
查看答案和解析>>
湖北省互聯(lián)網(wǎng)違法和不良信息舉報平臺 | 網(wǎng)上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權(quán)舉報專區(qū)
違法和不良信息舉報電話：027-86699610 舉報郵箱：58377363@163.com
