Passage 8
We know the mosquito very well. Mosquitoes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them.
No one likes the mosquito. But the mosquito may decide that she loves you. She? Yes, she. It’s true that male mosquito doesn’t bite (咬)and only the female mosquito bites because she needs blood to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she doesn’t like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites you, just remember you are chosen. You’re different from the others!
If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly and quietly that you may not feel anything different. After she bites, you will have an itch (痒) on your body because she puts something from her mouth together with your blood. By the time the itching begins, and she has flown away.
And then what happens? Well, after her delicious dinner, the mosquito feels tired. She just wants to find a place to have a good rest. There, on a leaf or a wall, she begins to lay eggs, hundreds of eggs.
1.“Mosquito” means _______ in Chinese.
A.苍蝇 B.蜻蜓 C. 跳蚤 D.蚊子
2.We know mosquitoes very well because ___________.
A. they can be found easily B. they fly here and there
C. there are many kinds of them D. they can fly
3.If the mosquito doesn’t bite you, it will ________.
A. get angry with you B. be afraid of you
C. make a lot of noise D. choose another one
4.The mosquito bites you _________.
A. when you’re asleep B. because you have choose it
C. too quickly to let you know D. but doesn’t like you
5.Which of the following sentences is wrong?
A. The itching begins after the mosquito bites you . B. You feel terrible when the mosquito bites you.
C. Mosquitoes use blood to lay eggs. D. All the mosquitoes don’t like to bite people for blood.
Passage 9
We’ve talked about snails (蜗牛) and their slow move. But much of the time snails don’t move at all. They are in their shells (壳) —sleeping.
Hot sun will dry out a snail’s body. So at the least sign of hot sun, a snail draws its body into his shell. A snail will die in a heavy rain. So when it rains, a snail does the same thing, too. A snail can sleep for as long as it needs to. It spends all the winter months in its shell, asleep.
In the spring the snail wakes up. Its body, about three inches long, comes out from the shell. When hungry, the snail looks for food. Its eyes, at the end of the top feelers (触角), are very weak. But its sense (感觉) of smell is very strong. It helps the snail to find food and the new greens.
A snail’s mouth is no bigger than the point of a pin (大头针). Yet it has 256,000 teeth! The teeth are very small, and you can’t see them. If you put a snail in a hard paper box, it will eat its way out! And if a snail wears out its teeth, it will grow new ones.
1.A snail _________.
A.moves more slowly at night　B.has thousands of feet
C.doesn’t move at all D.sleeps much of the time
2.In the sentence “A snail draws its body into its shell”, the word “draw” means _____.
A. to make with a pencil B. to push　C. to pull D. to move away
3.From the story, we know _________.
A. a snail’s shell is very thin B. a snail can’t see well
C. a snail’s nose is quite short D. a snail’s body changes in different seasons
4.A snail goes to sleep when _____.
A. it feels hungry B. it is put into a paper box
C. spring is coming D. it rains heavily
5.Which of the following is wrong?
A.In winter the snail doesn’t eat or move.　B.A snail doesn’t like living under the sun.
C.The snail’s teeth can’t be worn out.　D.The snail’s nose helps to find food.
Passage 10
Jupiter’s Moons and How They Travel
The many moons of Jupiter travel around the planet in different directions (方向).
Jupiter is the largest planet in our solar system. Over the years, scientists have found that Jupiter has its own small solar system. Earth has one moon. Jupiter has at least sixteen and probably more.
Since there are so many moons, scientists began to number them. The numerals(numbers)tell the sequence, or order, in which the moons were found. They were slower to name the moons. All of Jupiter’s moons now have a name as well as a number.
The first five moons to be discovered are known as the “inner moons”. But they are not the closest to the planet. The closest is only 127,600 kilometers away from Jupiter. All the inner moons circle the planet in counter-clockwise direction, that is, opposite of the hands of a clock.
Jupiter’s middle group of moons are at least 11,100,000 kilometers from the planet. They also move in a counter-clockwise motion (moving). The four farthest moons are at least 20,700,000 kilometers away. These are called “outer moons”. They circle in a clockwise motion.
How many more moons do you think will be discovered？
1.What does “solar system” in this article mean？______
A. 银河系 B. 宇宙空间 C. 流星雨 D. 太阳系
2.Things that travel in the same direction as the hands of a clock are said to be traveling in a______.
A. clockwise direction B. counter-clockwise direction
C. same direction D. different direction
3.Jupiter’s _____group of moons travel in a clockwise direction.
A. planets B. inner C. middle D. outer
4.The numbers given to Jupiter’s moons tell ______.
A. the order in which they were discovered B. the order in which they travel
C. the order of their distance from Jupiter D. the order of names
5.According to the passage，which of the following statements is true？
A. None of Jupiter’s moons have names.　B. Most of Jupiter's moons circle clockwise.
C. Jupiter's inner moons were discovered first.　D. Jupiter is the nearest planet to the earth.
6.How far away are the middle group of moons from Jupiter？
A. It’s not mentioned. B. 11,100,000 kilometers away.
C. 127,600 kilometers away. D. 20,700,000 kilometers away.
Passage 11
WHY IS THE SUN IMPORTANT？
The sun is a huge, hot, bright star. It is important because without it there would be no life on Earth. The sun gives us light and heat.
All living things need light and heat from the sun to live. Plants need light and heat to grow. They use the light from the sun to make food. We cannot make our own food, but plants can. All the food we eat comes from plants in a food chain(链)which starts with the sun. For example,

Animals need sunlight, too. Just like us, their food comes from a food chain which begins with the sun and the plants.
sun→ leaf→ caterpillar(毛虫)→bird
sun→ seaweed(海藻)→small fish→ whale(鲸)
Sunlight means we can see during the day. If there was no sun, it would be dark all the time. Even when the sky is cloudy, the sunlight is very strong and it shines through the clouds.
1.Which words tell us what the sun is like？
A. Huge. B. Hot. C. Bright. D. All above.
2.What are the two main things the sun gives us？
A. Light and heat. B. Heat and eggs.　C. Corn and light. D. Wheat and bread.
3.Why can we still see during the day when the sky is cloudy？
A. Because we can see all day and all night.
B. Because the sun can't give us light all day long.
C. Because the sunlight can shine through the clouds.
D. Because we can't see at night.
4.All the food we eat comes from ______. And it starts with the _____.
A. plants; earth B. a food chain; sun
C. food; sun D. plants; star
5.In what way do you think the sun cannot be harmful(有害的)？
A. The sun can do harm to your eyes and skin.
B. It can make rivers too dry.
C. Without it there would be no life on Earth.
D. Hot sun on dry land can cause fires.
Passage 12
Most animals only have animals of a different kind for food. But sometimes two kinds of animals come together in a partnership (伙伴关系) which is good for them. You may have noticed some birds on the backs of sheep. This is not because they want a ride, but because they find easy food in the parasites (寄生虫) on sheep. The sheep let the birds do so because they can stop the parasites from troubling them. So though they can do with it by themselves, they can do better together with each other.
Sometimes an animal has a plant partner. The relationship develops until the two partners cannot do without each other. This is so in corals of the sea. Inside their bodies they have very small plants, which act as “cleaners”, taking the useless things from the coral and giving oxygen in return. That is what the animal needs to live. If the plants are killed, or are even kept from receiving light so that they cannot live as usual, the corals will die.
1.Some birds like to sit on a sheep because ________.
A. they can eat its parasites B. they enjoy traveling with the sheep
C. they can’t live without its parasites D. they want to find the warm place
2.The underlined word “they” in the first paragraph means _________.
A. birds and parasites B. birds and sheep
C. parasites and sheep D. birds, parasites and sheep
3.We learn from the passage that corals need plants for _______.
A. friends B. light C. food D. oxygen
4.The Chinese for the word “oxygen” is _________.
A. 氧气 B. 空气 C. 废气 D.二氧化碳
5.What is the second paragraph mainly about?
A. Some animals and plants cannot live without each other.
B. Some animals and plants cannot develop their friendship easily.
C. Some plants eat each other.
D. Some animals live better together.

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