Do you know why different animals or pests(害虫) have their special colours? Colours in them seem to be used mainly to protect themselves. Some birds like eating locusts(蝗虫),but birds cannot easily catch them. Why? It is because locusts change their colours together with the change of the colours of crops. When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown colour as crops have. Some other pests with different colours from plants are easily found and eaten by their enemies (敌人). So they have to hide themselves for lives and appear only at night.
If you study the animal life, you’ll find the main use of colouring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be seen by hunters. This is because they have the colours much like the tree.
Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid(液体) when it faces danger. While the liquid spreads over, the enemies cannot find it. And it immediately swims away. So it has lived up to now though it isn’t strong at all.
1.From the passage we can learn that locusts ____________.
A. are small animals
B. are easily found by birds
C. are dangerous to their enemies
D. change their colours to protect themselves
2.How can pests with different colours from plants keep out of danger?
A. They run away quickly.
B. Their colours are much like their enemies.
C. They hide themselves in the day and appear at night.
D. They have to move quietly.
3.Bears and lions can keep safe because they ____________.
A. have the colours much like the trees
B. move quickly
C. like brown and grey colours
D. live in forests
4.The kind of fish can live up to now because ____________.
A. it is very big and strong
B. the liquid it sends out can help it escape from its enemies
C. the liquid it sends out can kill its enemies
D. it swims faster than any other fish
5.Which is the best title for this passage?
A. The Change of Colours for Animals and Pests
B. Colours of Different Animals and Pests
C. The Main Use of Colours for Animals and Pests
D. Some Animals and Pests
What problems do the teenagers probably have? Here is a survey showing their main problems.
Problems | Causes | Advice |
Feeling stressed | Too much homework. Don’t have enough time for their hobbies. | Make a plan for study and hobbies. Find time to relax as possible as you can. |
Getting short-sighted | Too much homework. Bad reading and writing habits. | Do homework or reading in a correct way. |
Fights | Don’t know how to get on well with classmates. | Make more friends and understand each other. Share your problems with them. |
Feeling tired of study | Computer games’ bad influence. | Don’t be crazy about computer games. Play them just for a short time when you are tired. |
Getting fat | Having more pocket money to buy snacks. Dislike doing exercise. | Use your pocket money to do something meaningful. Spend some time doing exercise every day. |
1.How many main problems are there in the survey?
A. Four. B. Five. C. Six. D. Seven.
2. What problems are caused by too much homework?
A. Feeling stressed and fight.
B. Feeling tired of study and getting fat.
C. Feeling stressed and getting short-sighted.
D. Getting short-sighted and feeling tired of study.
3.If Simon is feeling stressed, he should _____________.
A. do much more homework
B. make a plan for study and hobbies
C. buy some snacks
D. donate his pocket money to Project Hope
4.Peter is tired of study, maybe because he _____________.
A. has no close friends
B. has no pocket money
C. gets fatter and fatter
D. plays too many computer games
5._____________ is a good way for the teenagers to stop fights.
A. Learning how to make friends
B. Playing computer games
C. Doing less homework
D. Paying no attention to each other
完形填空
“What’s the matter, mum?”
As soon as I enter the door, I find that my mother is ________ . It’s unusual──she usually ________ the door and welcomes me with a smile!
“She’s dying,”mum says sadly. I ________ what she says. The tulip (郁金香),my mother’s ________ is dying.
A month ago, we moved ________ our new house and mum bought a very beautiful tulip. Mum liked it very much. ________ she was free, she would sit ________ her armchair beside the tulip and enjoys its beautiful colour ________ sweet smell.
She treated it like a baby and looked after it ________ . She put the tulip by window and moved it from one place to ________ to give the tulip enough sunshine. The first thing she did when she ________ every morning was ________ the tulip.
She hoped that with great care, the tulip would become more beautiful and ________ . But the tulip was dying ________ too much sunshine, water and fertilizer.
It’s true that mother loved the tulip. But this kind of love ________ be harmful. Love can sometimes kill what you love.
1.A. happy B. unhappy C. pleased D. pleasant
2.A. closes B. opens C. keeps D. takes
3.A. think B. love C. know D. find
4.A. favourite B. hate C. unlike D. like
5.A. with B. around C. across D. into
6.A. Though B. Because C. After D. When
7.A. at B. in C. by D. under
8.A. but B. and C. for D. or
9.A. happily B. brightly C. carefully D. usually
10.A. other B. others C. the others D. another
11.A. got up B. made the bed C. played the piano D. washed her face
12.A. to take B. to cut C. to water D. to pull
13.A. smaller B. stronger C. wetter D. older
14.A. because B. for C. since D. because of
15.A. must B. should C. can D. need
— The food here is very nice. Thank you for inviting me. —____________.
A. All right B. With pleasure
C. Don’t thank me D. Don’t mention it
— ___________ go for a walk after school? — Good idea!
A. Why not B. Why do you
C. What about D. What for
— Philip has gone to New Zealand. — Oh, can you tell me ____________?
A. when did he leave B. when does he leave
C. when he left D. when he leaves