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

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

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.

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

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

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

1.“Mosquito” means _______ in Chinese.

　A.苍蝇 B.蜻蜓 C. 跳蚤 D.蚊子

5.When our part of the earth turns away from the sun we have “______”, and when our part faces the sun we have “_____”.

　A.day; night B. day; day C. night; day D. night; night

　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.

4.We can’t see the earth moving because _________.

　A. the earth stands still B. everything on the earth is moving with us

　C. the earth is smaller than the sun D. the earth goes only at night

3.Usually we say, “The sun rises in the east and sets in the west.” In fact, the sun _______.

　A. does not move B. is moving all the time

　C. moves sometimes D. is too heavy to move