--Where's Jerry?Mr Green wants to see him．--I think he be ill．Just now.he coughed and asked me the way to the hospital．( )A．mayB．can'tC．mustD．need 题目和参考答案——青夏教育精英家教网—

13．The earth is 4，600 million years old．We humans have lived on the earth for only 35，000 years，but during this period we have changed our planet a lot in many ways．Some things we're done are evey good for the earth while some are bad．
    Fewer trees   All over the world，people have cut down millions of trees．When it rains or when the wind blows，the earth is taken away．Forests have become deserts，so more and more sorts of animals and plants are disappearing．
    Traffic and factory pollution    In big cities，cars and buses have polluted the air．Now many people in cities have health proplems．Factories have also polluted the land and the water．As a result，many rivers and lakes are now dead．
    The ozone layer （臭氧层）    Around the earth，there's a special kind of oxygen（O₂）called"oaone"（O₃）．It is important to the earth．But now air pollution is destroying it and that has made a very big hole in the ozone layer．Too much harmful radiation（辐射）from the sun passes though the hole and reaches the earth directly．This is very dangerous because it can cause cancer．
     More carbon dioxide （CO₂） Carbon dioxide in the air has increased a lot．It mainly comes from burning oil，coal and wood．This has formed a"blanket"around the each．The heat from the sun can't eacape so the temperature is rising．This is called"the greenhouse effect（温室效应）"．It causes the level of the ocean to rise and the climate（气候）of the earth to change．
    All these problems are very serious，so we must do something now．
73．Which of the following is right according to the passage？C
A．Cars don't pollute the air．
B．People cut down fewer trees．
C．Factories can pollute the water．
D．We humans have changed our planet a little．
74．What does the underlined word"it"in the passage refer to？B
A．CO₂．
B．O₃．
C．O₂．
D．H₂O．
75．What makes the level of the occeans rise？C
A．Pollution．
B．Fewer trees．
C．The greenhouse．
D．Changes in the climate．
76．What is the best title for this passage？A
A．Environment Problems．
B．Hope for the Future．
C．Pollution on the Earth．
D．The Greenhouse Effect．

3．-_________ does it take？-It takes about 30minutes _________．（　　）

	A．	How long，walk		B．	How far，walk
	C．	How far，walking		D．	How long，to walk

20． give him a watch？（　　）

7．Should teenagers help do the housework or not？Here are some students'ideas．

Tina，14	I hardly ever do the housework．Sometimes my mother asks me to clean my room if she's really busy，but she always gives me money of a gift for helping her．After all（毕竟），housework is the job of parents，isn't it？
David，14	Housework may be a little fun．My parents are sometimes tired．When I try to help them with some housework，they are very happy．I think doing the housework makes me and my parents happy，so I like doing it．
Judy，14	I often help my mother wash clothes or help my father wash his car．Doing housework can keep me strong and healthy．It is like a kind of exercise，isn't it？I think it's important to do the housework because I can learn to be independent．
Henry，14	I have to do the housework for about an hour every day．I do the dishes，wash the clothes and clean the floor．My parents never pay me for doing the housework．But I think it's our duty in the family，isn't it？

56．The four teenagers are of the sameA．
A．age
B．idea
C．hobby
D．housework
57．Amay do the least housework of the four teenagers．
A．Tina
B．David
C．Judy
D．Henry
58．Judy thinks it isDdo the housework．
A．hard
B．useless
C．boring
D．important
59．Coften help parents do some washing．
A．Tina and David
B．David and Judy
C．Judy and Henry
D．Tina and Henry
60．Which of the following is TURE？B
A．David hates doing the housework because it's boring．
B．Henry thinks everyone in the family should do some housework．
C．Judy does the housework for an hour every day．
D．Henry often helps his father wash the car．

17．--_____ you _____ your lost bag pack？
--Not yet．So I have to buy a new one．（　　）

	A．	Did； find		B．	Have； found
	C．	Are； looking for		D．	Had； found

4．Some people like to put their life in order．They are never late for work，they return their books to the library on time，they（26 ）C people's birthdays and they pay their bills as soon as they arrive．Mr．Robinson is（27）B a person．
Mr． Robinson works at a bank and lives alone．His sister live in the next town with her husband，and her son，Jack．Mr．Robinson doesn't visit his sister or her（28）B from one year to the next，but he（29）C Christmas cards to them，and he hasn't forgotten each one of Jack's 20birthdays．
Last week Mr．Robinson drove home from the bank at the（30）A time，driving neither too slow nor too fast．He parked his car where he（31）C parked it，out of the way of other cars and he went into the house to make（32）D evening meal．Just then there was a knock（33）C the door．Mr．Robinson opened the door and found a policeman standing on the doorstep（门阶）．
"What have I（34）B wrong？"Mr．Robinson asked himself in surprise，"Have I driven on the wrong side of the road？Has there been any trouble at the（35）D？Have I forgotten to pay an important bill？"
"Hello，Uncle，"said the policeman，"My name's Jack!"

26．A．forget	B．refuse	C．remember	D．find
27．A．so	B．such	C．like	D．as
28．A．friend	B．family	C．mother	D．father
29．A．collects	B．asks	C．sends	D．hangs
30．A．usual	B．certain	C．other	D．busy
31．A．never	B．sometimes	C．always	D．hardly
32．A．our	B．their	C．her	D．his
33．A．down	B．out	C．on	D．by
34．A．driven	B．done	C．parked	D．opened
35．A．doorstep	B．town	C．library	D．bank．

1．The bridge is the river．（　　）

2．-Do you know that the road to _______ is very difficult？
-Yes，I do．But I won't give up ___________ my best．（　　）

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