E　　
As a result of pollution , Lake Erie , on the borders of the USA and Canada, is now without any living things.　　
Pollution in water is not simply a matter of “poisons” killing large numbers of fish overnight. Very often the effects of pollution are not noticed for many months or years because the first organism(生物体 ) to be affected are either plants or plankton. But these organisms are the food of fish and birds and other creatures. When this food disappears, the fish and birds die too. In this way a whole food chain can be wiped out, and it is not until dead fish and water birds are seen at the river’s edge or on the sea shore that people realize what is happening.　　
Where do the substances which pollute the water come form? There are two main sources sewage (污水) and industrial waste. As more detergent (洗涤剂 ) is used in the home, so more of it is finally put into our rivers. lakes and seas. Detergents harm water birds dissolving the natural substances which keep their feathers waterproof. Sewage itself, if not properly treated, makes the water dirty and prevents all forms of life in rivers and the sea from receiving the oxygen they need. Industrial waste is even more harmful since there are many highly poisonous things in it, such as copper and lead(铅 ).　　
So , if we want or stop this pollution , the answer is simple: sewage and industrial waste must be made clean before flowing into the water. It may already be too late to save some rivers and lakes, but others can still be saved if the correct action is taken at once.　　
72. Pollution in water is noticed _____. 　　
A. when the first organisms are affected    B. when a good many fish and birds die 　　
C. when poisonous things are poured into water      　　
D. as soon as the balance of nature is destroyed 　　
73. The living things die because there is no ____ in the lake or river.  　　
A. water          B. fish               C. poison           D. oxygen 　　
74. Which of the following is harmful according to the passage? 　　
A. Organisms                             B. Plants and plankton in the water     　　
C. Waste water from cleaning   D. Industrial waste made clear before flowing into the water 　　
75.The way to stop water pollution is _______.　　
A. realize the serious situation clearly 　　
B. put oxygen into the river 　　
C. make the waste material harmless before flowing into the water 　　
D. make special room in the sea for our rubbish　　

B
　　More and more young people enjoy having pets,but they don't like to keep them.At present in Changchun,people prefer to rent pets and play with them during weekends,regarding this as a fashionablelifestyle.
　　Mr.Feng,from Jilin Province,likes pet dogs.Last weekend he rented a Scottish shepherd dog from a localpet shop.He bathed the dog,and went walking with it.He said he could not keep pets in his spare time because he was busy everday except weekends.To rent pets during weekends seemsto be the most practical and economical way to relax himself.
　　A manager from a pet shop says his customers(主顾) are all like Mr.Feng,usually too busy to keeppets,and some of them have never kept any pets before. But they hope torent pets and learn to keep pets so that they can know whether they can be good pet masters or not.
　　It's reported that all pets for rent need to beimmunized(免疫).Before they are rented out,pet shops will teach their customers the ABCs of pet keeping and preparing pet food based on each pet's taste.
　　Shop assistants will also provide(提供)different konds of services for pets like health checkup if their customers want to rent pets for a longer period.
　　Dogs for rent are often not ordinary ones,so their rent is high,usually 200 - 500 yuan(US＄ 25-63) per day.Sometimes,you have to leave thousands of yuan with the owner before you can take a dog away.
　　60.Mr.Feng rents pets instead of keeping them mainly because _______.
　　A.it's cheaper                  B.it is more fun
　　C.he has little spare time         D.he wants a new pet for each week
　　61.What do we know about those who rent pets?
　　A.None of them ever kept a pet before.
　　B.They'll become pet owners later.
　　C.They enjoy having pets.
　　D.They want to help protect animals.
　　62.The underlined phrase "the ABCs(of…)"in the 4th paragraph refers to "______(of…)".
　　A.the possible dangers           B.the basic knowledge
　　C.the communicative language    D.the rules set by the shops
　　63.The dogs' rent is high because___________.
　　A.the customers are rich           B.there are few dogs to rent
　　C.their owners hate to leave them    D.they are top - class dogs

Once upon a time, there were two very good friends who lived together in the shade of a rock. Strange as it may seem, one was a　    and one was a tiger. They had met when they were too　   to know the difference between lions and tigers. So they did not think their　   was at all unusual. Besides, it was a peaceful part of the mountains, possibly　    the influence of a gentle forest monk who lived nearby. He was a hermit, one who　    　far away from other people.　

For some unknown reason, one day the two friends got into a silly　    . The tiger said, “Everyone knows the cold　    when the moon wanes from full to new! ” The lion said, “Where did you hear such nonsense? Everyone knows the　    comes when the moon waxes from　    to full! ”

The argument got stronger and stronger. Neither could　     the other. They could not　     any conclusion to resolve the growing dispute. They　     started calling each other names! Fearing for their friendship, they decided to go to ask the learned forest　     , who would surely know about such things.　

Visiting the　     hermit, the lion and tiger bowed respectfully and put their question to him. The friendly monk thought for a while and then gave his　     . “It can be cold in any phase of the　     , from new to full and back to new again. It is the wind that brings the cold, 　     from west or north or east. Therefore, in a way, you are both right! And neither of you is　     by the other. The most important thing is to live without conflict, to remain　     . Unity is best by all means. ”

The lion and tiger thanked the wise hermit. They were happy to　     　be friends.　

1.A. fox               B. hen                     C. donkey           D. lion

2.A. weak            B. unforgettable            C. young            D. poor

3.A. friendship       B. difference        C. relationship                 D. connection

4.A. in turn          B. due to                   C. according to      D. as to

5.A. lived             B. survived           C. walked           D. moved

6.A. argument       B. decision                  C. activity           D. conference

7.A. happens        B. bears                    C. comes           D. seems

8.A. clean            B. cold                      C. cool             D. good

9.A. wonderful       B. fresh                    C. delicious         D. new

10.A. solve        B. compete                  C. convince         D. remind

11.A. arrive        B. reach                    C. cause            D. paint

12.A. far          B. ever              C. yet                      D. even

13.A. monk        B. teacher                  C. mother                   D. parent

14.A. kind         B. different          C. peaceful                D. rich

15.A. answer       B. speech                  C. comment                 D. remark

16.A. sun          B. weather                  C. moon            D. day

17.A. whether      B. until                     C. if                 D. when

18.A. rewarded     B. won                     C. defeated         D. awarded

19.A. moved       B. united            C. interested              D. amused

20.A. too          B. quite             C. also             D. still