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In nature, you may see many insects (昆虫）and animals of different colors. Have you ever wondered why?
Locusts are super delicious food for birds, but it is not always an easy job for birds to catch them. It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops(庄稼). When crops are young, locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.
Brown bears, tigers and other animals move quietly through forests. They can’t be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil(土壤）in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive, they have to hide themselves in the daytime and appear only at night.
Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over, its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.
1.It is not easy for birds to catch locusts because____________. .
A.locusts are good runners
B. locusts can jump very high
C. locusts are smarter than birds
D. locusts can change their color
2. According to the passage, most soil insects_________
A.do not have bright colors
B. change their colors with the soil
C. do not live in a dark and wet environment
D. Eat colorful insects like butterflies and bees
3.What’s the meaning of the underlined word “survive” in the passage?
A. 繁殖 B. 产卵 C. 觅食 D. 生存
4.The ink fish_______so that its enemies will not see it?
A. changes its color
B. makes the water around it black
C. appears only at night
D. hides itself in the sea rocks
5.What is the main ides of this passage?
A. Some insects and animals have different skills.
B. Some insects and animals are clever than we think.
C. Some insects and animals use colors to protect themselves.
D. Some insects and animals can get used to the environment easily.
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Have you ever wondered how and why a fall leaf changes color? We first have to understand what leaves are and what they do.
Plants are the world’s food factories. Plants take water from the ground and take CO2 from the air. Plants use sunlight to turn water and CO2 into glucose(葡萄糖). Glucose is a kind of sugar. Using it as food, plants get energy and grow. Plants using sunlight to turn water and CO2 into sugar is called photosynthesis(光合作用). ChlorophyII helps photosynthesis. It gives plants their green color.
As summer ends and autumn comes, the days get shorter and shorter, and trees ＂know＂ to begin getting ready for winter. During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food — making factories. As the green chlorophyII disappears from the leaves, we begin to see yellow and orange leaves. These colors have been in the leaves all the time. We just can’t see them in the summer, because they are covered up by the green chlorophyII.
The bright reds and purples we see in leaves are made mostly in autumn. In some trees, glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red color. The brown color of trees is made from waste left in the leaves. It is mixture(混合物) of all these things. It makes the beautiful leaves during autumn.
根据材料内容选择最佳答案。
1.The underline word ＂chlorophyII＂ in the passage means ＂ ＂ in Chinese.
A. 胡萝卜素 B. 叶绿素 C. 氯霉素 D.花青素
2.When they rest in winter, trees live on the food they store during the .
A. summer B. autumn C. winter D. spring
3.Plants use sunlight to turn into sugar.
A. water and chlorophyII
B. water and CO2
C. CO2 and glucose
D. water and glucose
4.Which of the following is NOT true according to the passage?
A. Glucose is a kind of sugar and plants use it as food for energy and growing.
B. Leaves turn red because sunlight and the cool nights of autumn turn glucose into a red color.
C. We can’t see yellow or orange leaves in summer because the two colors are not in leaves.
D. During winter, there is not enough light or water for photosynthesis.
5. What’s the main meaning of this passage?
A. What’s photosynthesis?
B. How and why leaves change colors?
C. Different kinds of leaves.
D. How the seasons change.
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阅读理解。
Have you ever wondered how and why a fall leaf changes color? We first have to understand what leaves are and what they do.
Leaves are the world’s food factories. Plants take water from the ground and take CO2 from the air. Plants use sunlight to turn water and CO2 into glucose(葡萄糖). Glucose is a kind is a kind of sugar. Using it as food, plants get energy and grow. Plants using sunlight to turn water and CO2 into sugar is called photosynthesis(光合作用). ChlorophyII helps photosynthesis. It gives plants their green color.
As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.As the green chlorophyII disappears from the leaves, we begin to see yellow and orange leaves. These colors have been in the leaves all the time. We just can’t see them in the summer, because they are covered up by the green chlorophyII.
The bright reds and purples in leaves are made mostly in autumn. In some trees, glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red color. The brown color of trees is made from waste left in the leaves. It is mixture(混合物) of all these things. It makes the beautiful leaves during autumn.
根据短文内容选择最佳答案。
1.The underline word “chlorophyII” in the passage means “_________” in Chinese.
A. 胡萝卜素 B. 叶绿素 C. 氯霉素
2.When they rest in winter, trees live on the food they store during the _________.
A. summer B. autumn C. winter
3.Which of the following is not true according to the passage?
A． Glucose is a kind of sugar and plants use it as food for energy and growing.
B． Leaves turn red because sunlight and the cool nights of autumn turn glucose into a red color.
C． We can’t see yellow or orange leaves in summer because the two colors are not in leaves.
4.What’s the main meaning of this passage?
A. What’s photosynthesis?
B. How and why leaves change colors?
C. Different kinds of leaves.
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Have you ever wondered why Americans are always watching their weight,while the French,who often eat rich food,continue to stay thin? Now a report from Corell University suggests a possible answer.The study shows how life style and decisions about eating may affect weight.Researchers (研究者) find that the French usually stop eating when they feel full. However,Americans often stop when their plate is empty or they have reached the end oftheir favorite TV show.In fact,Americans are taught from an early age to“clean their plates”because children in poorer countries“are going hungry.”
According to Dr.Joseph Mercola,a health expert,the French see eating as an important part of their life styles.They enjoy food and spend a long time at the table,while Americ see eating as something to do quickly between the other daily activities.Mercola believes stopped.Besides，he points out that Americans drive to huge supermarkets to buy frozen（冷冻）foods for the week.The French,instead,prefer to shop daily,walking to small shops and farmer's markets where they can choose fresh fruits,vegetables,and eggs as well as high-quality (高质量的) meat foreach meal.
After a visit to the United States,Mirelle Guiliano,writer of French Women Don't Get Fat,decided to write about the importance of“restraint”-knowing when to stop instead of suggesting how to avoid food.Today she continues to stay slim and seldom goes to the gym.
1.Which of the following can replace (替代) the phrase“clean their plates"?
A. be on a diet B. eat everything on their plates
C. buy fresh food everyday D. eat a lot and waste a lot
2.What's the meaning ofthe underlined word “restraint”?
A. 克制 B. 训练 C. 避免 D. 坚持
3.In what way are the French different from Americans according to Dr.Joseph Mercola?
A. They go shopping at supermarkets more often.
B. They eat quickly between the other daily activities.
C. They regard eating as a key part of their life styles.
D. They usually eat too much frozen food.
4.This text is mainly about the relationship (关系) between _____.
A. Americans and the French B. life styles and overweight
C. Americans and health D. fast food and overweight
5.Where can you find this passage?
A. A TV interview B. A food advertisement
C. A health report D. A book review(书评)
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Children are amazing! They pick up languages so naturally and easily. Have you ever wondered why? It’s not because they have great natural language abilities. In fact, studies s1.that an adult’s potential to learn language is just as good as a child’s .
So why do children still seem to acquire(学到) language more quickly than the rest of us? It’s because of the way they learn. Children learn by simply doing what comes naturally—they listen, c 2. and communicate. Let’s take a c 3.look at how children acquire language. Perhaps we can d 4.a better, more “natural” way to learn English.
Children don’t practice grammar drills, but u 5. language to talk about things that interest them. This helps them learn to express themselves. They don’t worry about inadequate vocabulary or poor grammar. They find ways to e 6. themselves, and they do it successfully.Students of English should also pay more attention to genuine(真实的) communication. Look for c7.to talk with people in English. If you can’t find a foreigner to talk to, talk with other English students i 8. . Start an English discussion group and chat about music, movies or whatever interests you.
Don’t worry about m 9. mistakes. The aim is to learn how to communicate easily and comfortably. Remember that you can communicate successfully even with a small v10..Trust your own natural abilities to learn English. You’ve got more potential than you probably realize!
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阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
Have you ever wondered how and why a fall leaf changes color? We first have to understand what leaves are and what they do.
Leaves are the world’s food factories. Plants take water from the ground and take CO2 from the air. Plants use sunlight to turn water and CO2 into glucose(葡萄糖). Glucose is a kind is a kind of sugar. Using it as food, plants get energy and grow. Plants using sunlight to turn water and CO2 into sugar is called photosynthesis(光合作用). ChlorophyII helps photosynthesis. It gives plants their green color.
As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food—making factories.As the green chlorophyII disappears from the leaves, we begin to see yellow and orange leaves. These colors have been in the leaves all the time. We just can’t see them in the summer, because they are covered up by the green chlorophyII.
The bright reds and purples in leaves are made mostly in autumn. In some trees, glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red color. The brown color of trees is made from waste left in the leaves. It is mixture(混合物) of all these things. It makes the beautiful leaves during autumn.
1.The underline word “chlorophyII” in the passage means “_________” in Chinese.
A．胡萝卜素
B．叶绿素
C．氯霉素
2.When they rest in winter, trees live on the food they store during the _________.
A．summer
B．autumn
C．winter
3.Picture_______ shows how food—making factories work according to the passage.
A．
B．
C．
4.Which of the following is not true according to the passage?
A．Glucose is a kind of sugar and plants use it as food for energy and growing.
B．Leaves turn red because sunlight and the cool nights of autumn turn glucose into a red color.
C．We can’t see yellow or orange leaves in summer because the two colors are not in leaves.
5.What’s the main meaning of this passage?
A．What’s photosynthesis?
B．How and why leaves change colors?
C．Different kinds of leaves.
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What a wonderful book! It’s ________ one that I ________.
A. the best; ever read B. the best; have ever read
C. good; have ever read D. good; ever read
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语法填空。
Have you ever1. (meet) any difficult problems in your life? Have you ever wondered how to be happy? If you have these questions, you will find the book “Being a Happy Teenager” 2. (use). While I 3. (read) this book, I kept thinking a question: Why do teenagers always have troubles in their life? How can teenagers live 4. (happy)? In this book, Matthews gives us the answer.
About problems with parents and friends, the book says we should stop5. (be) angry and forgive. The book tells us some skills such as how to put everything that we have learned from life into beautiful pictures.
Many teenagers think that happiness comes from a good exam result or praise from6. people. But you can still be happy even if there are no such “good” things.
Success comes from7. good attitude. If you learn from problems, you 8.(have) success in the future.
Some school students have problems such as being too tall9. too short. But Matthews tells us that we should think about things 10. a positive way. This is Matthews’ most important lesson: you choose to be happy!
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Have you ever read an English book? Have you noticed its contents (目录)? If you do so, I think you can understand the contents below. Study the contents page of the book below and choose the right answer to each of the following questions.
Contents
Partl
The Growth（增长）of Shanghai and Its People
Chapter（章节）l The Growth of Shanghai 1
Chapter2 The Growth of Shanghai's Population 17
Part ll
The Needs of the People
Chapter 3 Our Environment 32
Chapter 4 Our Food Production 47
Chapter 5 Our Busy Traffic 58
Chapter 6 Supermarkets and Shopping Centers 71
Chapter 7 Parks and Places of Interest 86
To Our Readers 101
1.How many pages does the book have?
A.It has about eighty-six pages. B.It has a hundred and ten pages.
C.It has a hundred and one pages. D.It less than a hundred pages.
2.Which part tells you some facts about Shanghai’s growth?
A.Part I B.Part II C.Either Part I or Part II D.Part I and Part II
3.Where will you find information about traffic problems?
A.In Chapter 7. B.In Chapter 6. C.In Chapter 5. D.In Chapter 4.
4.Which pages can you read if you want to know something about food production?
A.Pages 17-31. B.Pages 32-46.
C.Page 17-85. D.Pages 47-57.
5.Where can you find this passage?
A.In the front of the book. B.In the middle of the book.
C.At the back of the book. D.At the end of the book.
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—Have you returned the book to the library ____?
—Yes， I have ____ returned it.
A. yet， ever B. ever， already
C. already， yet D. yet， already
