We have always been warned of the dangers of forest fires. They cause _____ 85 _____ to a forest. They kill many plants and animals in an eco-system, which is a group of living things and their environment. But have you ever heard of a forest fire that can be _____86_____  for a forest? People start some of the fires with a special reason to actually do good to the eco-system.
In fact, fires are a natural part of any eco-system. Without fires, the oldest and largest trees would stop sunlight from reaching the forest floor. Fires can _____87_____ some of these old trees. When the trees die, they provide something good for the earth. New trees can grow strong and healthy in their place.
Some trees even need fires to grow. These trees hold their seeds (種子) inside. Heat from a fire allows the coat of the seeds to open up. Then the seeds fall to the ground and have the _____88____ to grow/
Scientist, who know about nature’s needs, start some of these fires, called controlled burns. A fire is started and kept under control. This way, the fire does not spread out of the area or _____89_____ a after forest fires, they can go hungry _____90_____ their food has been damaged in the fire. Small, controlled fires mean than animals will not have to move far to find food. After some time, small plants begin to grow. Animals return soon after the plants return. This _____91_____  makes an eco-system.
So the next time you hear about a forest fire, think about the good as well as the bad. It may take a new eco-system a while to return, but it will likely come back stronger and healthier than ever.
小題1:
A．illnessB．difficultyC．damageD．flood
小題2:
A．helpfulB．powerfulC．harmfulD．a(chǎn)wful
小題3:
A．take the place ofB． get ready forC． be bad forD．get rid of
小題4:
A．timeB．waterC．chanceD．skill
小題5:
A．discoverB．coverC．butD．waste
小題6:
A．becauseB．a(chǎn)lthoughC．butD．so
小題7:
A．a(chǎn)lmostB．a(chǎn)gainC．neverD．even

小題1:C
小題1:A
小題1:D
小題1:C
小題1:B
小題1:C
小題1:B
【主旨大意】
文章指出森林火災(zāi)并不像人們想象的那樣一無是處，有時(shí)候，可控范圍內(nèi)的火災(zāi)不僅無害而且還具有積極意義。比如，可控制的火災(zāi)可以使森林里的老樹、死樹燒掉，使陽光能夠照射到地面；火災(zāi)燒掉了一些種子外層包裹的厚厚的皮，并讓種子有機(jī)會(huì)得以在地面上生根發(fā)芽。
小題1:該句意為“森林火災(zāi)會(huì)對(duì)森林引起毀壞”，damage名詞，意為“毀壞、損害”，flood名詞，意為“洪水”；illness意為“疾病”選項(xiàng)C意為“困難”，故由句意答案選C；
小題1:由后邊的那句話可以知道“有時(shí)候森林火災(zāi)對(duì)森林系統(tǒng)還是有幫助的”，故答案選A；
小題1:該句意為“森林火災(zāi)可以燒掉一些老樹”，get rid of意為“去掉，除去”，故選D；而選項(xiàng)A為“取代，代替……”，選項(xiàng)B是“為……做好準(zhǔn)備”，選項(xiàng)C為“對(duì)……有害處”，A、B、C均不符合題意；
小題1:此處是指經(jīng)過火燒之后，有些種子厚厚的包衣被燒掉了，并掉到了地上，他們才有了生根發(fā)芽的機(jī)會(huì)�！惫蔬xC；A、B、D均不符合漢語意思；
小題1:句意為“通過這種方式，森林火災(zāi)不會(huì)傳播到別的地區(qū)或者燃燒一大片森林�！眂over本意為“涉及，覆蓋”，此處是指不會(huì)造成大面積的森林被燒掉；選項(xiàng)A意為“揭露，發(fā)現(xiàn)”，選項(xiàng)D為“浪費(fèi)”，都不符合題意；
小題1:此處是指森林大火過后，即使動(dòng)物能夠生存，他們也要經(jīng)歷饑餓的折磨，“因?yàn)樯种械氖澄锉淮蠡鹌茐牧恕�，故答案選C；
小題1:此處講一段時(shí)間之后，小的植物開始生長(zhǎng)。動(dòng)物在植物生長(zhǎng)之后也重新回來了�！斑@又形成了一個(gè)(新的)食物鏈”，故答案選again，選項(xiàng)A、C、D均不符合句意 ；
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語 來源：不詳 題型：閱讀理解

Right in the middle of the town are some long ponds(水池). They are only about half a foot deep. The men of Symi dug out the earth to make the ponds.
Over each pond is a low cover. It is made of glass that you can see through.
At night, sea water is taken into the ponds. The next day, the hot sun shines through the covers. The sun light turns the water into vapor(水蒸氣) and the vapor goes up from the ponds. The salt is left behind.
As it goes, the vapor became mist. On the inside of each cover, the little drops of mist run together to make big drops. These drops run down the sides of the cover, filling other ponds with fresh water.
The salt left in the ponds is washed out each night. Then more sea water is taken in. The factory is ready for the next day’s work. The covers and other parts of the factory cost very little. Sea water and sun cost nothing. Most people of Symi are poor. So to them this new way of getting fresh water seems wonderful.
小題1: Where are the little drops made into big drops?
A．On the inside of the covers.
B．In the ponds with fresh water.
C．On the walls of the salt water ponds.
D．Between the fresh water and the salt water.
小題2:The men of Symi dug some long ponds        .
A．in order to keep sea water
B．in order to get hot water inside
C．in order to fill them with fresh
D．in order to get fresh water
小題3:Which picture shows the right way to get fresh water in Symi?

小題4:Which of the following is NOT true?
A．The sea water is taken into the ponds at night every day.
B．There is a very big river running through the town to the sea.
C．The people in Symi can get fresh water from the factory.
D．People may see the water in the ponds through the cover.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Want to save the environment? You probably can’t fix everything on your own, but by taking small steps and keeping the environment in mind every day, you can make a difference,
1. Think Green. Challenge yourself to think about the environment as you live your life. If you shut off lights when you leave the room, turn off your TV when you’re not watching it, you’ll save energy. If you take shorter showers, you’ll save water.
2. Shop Green. Shopping is fun, but buying things you don’t need is wasteful and bad for the earth. Before you buy something, ask yourself how much you’ll really use it. Keep yourself away from buying products with unnecessary packaging (包裝), and whenever possible, buy things that were locally made instead of those shipped from far away.
3. Dress Green. Wear green trousers and T-shirts if you want. But what really matters isn’t the colour, it’s how the clothes were made. If you want to help the environment, the best place to find clothes is at a vintage store, but you might not want to buy everything used. No matter where you shop, keep an eye out for products made from environmentally friendly materials like organic(有機(jī)的) cotton, which is grown without the use of pesticides ( 殺蟲劑).
4. Study Green. What’s better than learning about the environment? Save it while you learn, It can be as simple as using both sides of a piece of paper before you recycle it, or reusing an old textbook :instead of buying a new one. If you want to do more, join an environmental group at your school, and encourage your friends to join, too.
小題1:The underlined phrase "a vintage store" in this passage refers to (是指) a place where you can buy          .
A．cheap clothesB．fashionable clothes
C．second-hand clothesD．clothes of special size
小題2: Which of the following acts does not agree with the writer’s green ideas?
A．Taking shorter showers.
B．Buying products with unnecessary packaging.
C．Wearing clothes made from organic materials.
D．Using both sides of a piece of paw.
小題3: What does the passage mainly talk about?
A．Some Methods to Live Happily.B．Some Advice to Save Money in Daily Life.
C．Some Steps to Live a Healthy Life.D．Some Ways to Make One’s Life Green.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

We live in “computer age(時(shí)代)”. People like using computers to do ___21__work. But more than 20 years ago, ___22__couldn’t do much. They were very big and expensive. Very __23___people were interested in them and knew how to use them. Today computers are smaller and ___24___.Since they are useful, many people like to use them, even at home.
Computers ___25___very important because they can work ___26___than men and make fewer mistakes. Computers can ____27___people do a lot of work. Writers can use computers to write. Teachers can use computers to help teaching and students use them to study. Computers can also remember what you put ___28____ them. Computers are very___29___. They are our good friends. Do you want to ___30____a computer.
小題1:
A．a(chǎn)ll kinds ofB．manyC．very much D．a(chǎn) lot
小題2:
A．teachers B．students C．computers D．scientists
小題3:
A．a(chǎn) fewB．few C．little D．a(chǎn) little
小題4:
A．cheaper B．cheap C．expensive D．more expensive
小題5:
A．is becomingB．becomesC．becomeD．became
小題6:
A．quicklyB．quick C．fastD． faster
小題7:
A．helpB．tell C．a(chǎn)skD．stop
小題8:
A．onB．into C．up D．to
小題9:
A．heavyB．careful C．beautifulD．helpful
小題10:
A．lend B．payC．haveD． sell

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解


 
(Megan and Kyle are talking before class begins.)
Megan: Hey, Kyle, are you ready for the big test today? I studied that list of words and the definitions(釋義) for two hours last night.
Kyle: Oh, but I didn’t study at all. I just wrote all the answers on the palm(手掌) of my hand, see?
Megan: Kyle! You can’t do that! That’s cheating(作弊)！
Kyle: Hey, don’t worry. I won’t be caught. Mrs King will never know.
(Mrs King comes in and passes out the test papers.)
Mrs King: Okay, no more talking. You may begin.
(Kyle looks st his hand when the teacher isn’t looking.)
Joe: (raising his hand) Mrs King, may I have a drink? I have the hiccups(打嗝).
Mrs King: Yes, you may.
Kyle: (raising his hand) Mrs King, may I get a drink, too?
Mrs King: Kyle, what is that on your hand? I think you had better come to my desk.
Kyle: Oh no…
(After this, Kyle realizes his mistake and never cheats in exams again.)
小題1:根據(jù)Megan and Kyle are talking before class begins（在上課開始前）.及下文描述，可知這個(gè)故事可能發(fā)生在教室里。A          
小題2:根據(jù)Kyle: Oh, but I didn’t study at all. I just wrote all the answers on the palm(手掌) of my hand, see?可知他把答案寫在了手上，選項(xiàng)中沒有正確答案。
小題3: Where did the story possibly take place?
A．In the classroom.
B．In the library.
C．On the playground.
D．In the reading room.
小題4: Where did Kyle write the answers?
A．On his hand.
B．In his notebook.
C．Megan told his classmates everything.
D．Joe told Mrs King about Kyle’s cheating.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

Food is very important. Everyone needs to 46 well if he or she wants to have a strong body. Our minds also need a kind of food. This kind of food is   47  . We begin to get knowledge even when we are very young. Small children are     48   in everything around them. They learn 49 while they are watching and listening. When they are getting older. they begin to 50 storybooks, science books, or anything they like.
When they find something new, they have to ask questions and 51 to find out the answers. What’s the best    52   to get knowledge? If we learn 53 ourselves, we will get the most knowledge. If we are     54   getting answers from others and don’t ask why, we will never learn more and understand    55     .
小題1: A. sleep   B. drink    C. cat
小題2: A. sport B. knowledge C. meat
小題3: A. interested B. interesting   C. good
小題4:A. something B. nothing   C. anything
小題5:A. write      B. learn       C. read
小題6: A. try    B. think   C. wait
小題7: A. place   B. way   C. road
小題8: A. with B. to   C. by
小題9: A. seldom B. always   C. sometimes
小題10: A. much   B. well C. better

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Researchers have announced the result of two studies on the health effects of the drug aspirin(阿斯匹林). One study shows aspirin can sharply reduce the chance that a healthy, older man will suffer from a heart attack.
The study offered two new results from earlier findings. It said taking one aspirin pill every other day helped only healthy men over the age of fifty. It also said aspirin gave the greatest protection against heart attacks to men with low blood cholesterol(膽固醇) levels.
Earlier in the United States began a major aspirin study in the early 1980s. it included 22,000 healthy men doctors. All were between the ages of forty and eighty-four. More than 11,000 of the doctors took a harmless pill that contained no drug. The men did not know which kind of pill they were taking.
The doctors who took aspirin suffered 44% fewer heart attacks than those taking the harmless pill. 139 men who took aspirin suffered from heart attacks. Ten of them died. 239 men who didn’t take aspirin suffered from heart attacks. Twenty-six of them died.
The researchers said the doctors’ study provides clear proof that taking aspirin can prevent a first heart attack in healthy, older men. They said ,however, the result does not mean every man over the age of fifty should take aspirin. They said aspirin couldn’t help men who do not eat healthy foods, who smoke cigarettes and who are fat. The researchers said men who think they would be helped by taking aspirin should talk with their doctors first.
小題1: The passage tells us that the new use of aspirin is___________.
A．to treat heart disease.
B．to reduce pain while one suffers from a heart attack.
C．to help old people to be more healthy.
D．to reduce the chance of a heart attack in old men.
小題2:Aspirin can help those who___________.
A．work as doctorsB．a(chǎn)re under 40 years old
C．a(chǎn)re fat and smoke cigarettesD．a(chǎn)re older and healthy
小題3:From the experiment we can conclude that about _________ of people who suffered from heart attacks without aspirin died.
A．7%B．11%
C．19%D．44%

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

We live in the computer age. People use computers to do much of their work. But few people know how to look after them. Remember the following when you use your computer:
1.Keep your computer in a cool, dry room. Too much or too little heat is bad for computers. Damp(潮濕) is also bad for them.
2.Do not let people smoke near your computer. Smoke of all kinds is very bad for many parts of a computer.
3.Do not eat or drink when you are near your computer. Pieces of food and a little water in the keyboard are also bad for a computer.
4.Keep your screen clean and do not have it too bright. They are bad for your eyes. Make sure the screen is not too far from or too near your eyes. Some people use different glasses to protect their eyes when they use a computer.
小題1:Computers can          people to do a lot of work.
A．useB．help C．makeD．take
小題2:Few people know how to          their computers.
A．look at B．try out C．look forD．take care of
小題3:A computer works well at a temperature of         .
A．0℃B．-5℃C．20℃D．35℃
小題4:Smoke is not good for many parts of a computer, is it?
A．Yes,it is.B．No,it isn't.C．Yes,a little.D．Not at all.
小題5:A dirty screen or a very bright screen is    for your eyes.
A．badB．goodC．usefulD．helpful

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Do you know that it is your own immune system working against the virus that makes you uncomfortable when getting a cold, but not the virus itself? So when you have got a strong immune system and the virus is strong enough too, you will possibly get terrible cold symptoms( 癥狀) ?
Vitamin C won't stop a cold
It is claimed that Vitamin C helps by increasing white blood cells. However, many tests have shown that it does not prevent colds. At best, it only slightly reduces the rime of symptoms.
Staying indoors won't protect you
One of the most likely sources of cold viruses is your computer mouse or desk. A study of the cold virus in offices found that 47% of desktops, 46% of computer mice and 45% of telephones had cold viruses on them.
Wrapping up warm won't protect you
Colds are more common in autumn and winter. That's because the cool, wet and cold weather drives people indoors, where viruses may more easily jump from one person to another. And the distinct peak in colds(感冒高峰) is in September and early January, which is likely due to the return of students to schools and colleges after the summer and winter vacation.
Old granny's chicken soup is right
Granny's chicken soup is an old cure for colds since a long time ago. Scientists say it is true. Chicken soup does help cure a cold. Many canned soups are just efficient as homemade ones.
小題1: It is ______ that makes you uncomfortable when getting a cold.
A．the virus itselfB．Vitamin C
C．the terrible cold symptomD．your own immune system
小題2: "Staying indoors won't protect you" tells us that ______ indoors.
A．there are many desksB．there are many telephones
C．there are many cold virusesD．there are many computer mice
小題3:The distinct peak in colds is in September and early January. That's because______.
A．it's in autumn and winter
B．the weather is cool, wet and cold
C．students return to schools and colleges
D．viruses can jump from one person to another more easily
小題4:Many canned soups are just efficient as homemade ones. The underlined word "efficient" means _____ in Chinese.
A. 有效的     B. 美味的     c. 值錢的     D. 方便的

查看答案和解析>>

同步練習(xí)冊(cè)答案