My mother is a diligent and kind woman. She is very busy from morning till night. As a teacher, she works hard. 　71　Both my brother and I love her dearly as she loves us.
　　My mother has been teaching math at a middle school in my hometown. She goes to work early in the morning and does not return home until late in the afternoon. 　72　 She treats them with patience and teaches them well. For her excellent quality and very good teaching results, she has been elected as a model teacher several times.
　　　73　 Every day, when she comes back home from work, she sets about doing housework, sweeping the living room and bedrooms or cleaning the furniture, and putting everything in good order. She seems to be busy all the time. As she has been very busy working every day, she looks older than her age. But she looks as cheerful and happy as ever. Mother never buys expensive dresses for herself, but she often buys some inexpensive but high quality clothes for us. 　74　 She just eats a plain meal outside when she is too busy to cook herself. She lives a busy yet simple life, without any complaints.
　　Often she says to us, “Work while you work, and play while you play. That is the way to be happy and gay. If you do not work, you will become lazy and be of no use to society”. What a piece of good advice this is! 　75　This advice of hers will always serve as a guide to my behavior. My mother is great indeed, and I always feel proud of her.
　　A. She enjoys listening to classic music.
　　B. As a mother, she takes good care of us and gives us every comfort.
　　C. She loves her students and cares for them.
　　D. She never goes to expensive restaurants to enjoy meals.
　　E. My mother is hard-working and never wastes money.
　　F. I never forget it and always bear it in my mind.
　　G. Can you tell us something about your mother?

--- Have you thought of the topic for the composition?

　　　　---Not yet, I _______ it very carefully, but I haven’t decided.

　　A. will consider 　　　　　B. have been considering

　　C. had considered　　　　　D. was considering

--- Have you thought of the topic for the composition?

　　　　---Not yet, I _______ it very carefully, but I haven’t decided.

　　A. will consider 　　　　　B. have been considering

　　C. had considered　　　　　D. was considering

完形填空：阅读下面短文，掌握其大意，然后从各题所给的四个选项中选出一个最佳答案。（共20小题，每小题1.5分）
In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be　46　.                    Today things are　 47　 , the world has become too　 48　 . We are using up our natural resources too quickly, and at the same time we are　 49　 our environment with dangerous chemicals. If we continue to do this, human life on the earth　 50　 survive.
　　Everyone　51　 today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing　 52 , more and more fish are caught. We know that if too many trees are cut down, 　53　 will disappear and nothing will grow on the land. Yet, we　 54　 to use bigger and more powerful machines to　55　 more and more trees.
　　We realize that if rivers are polluted with waste products from factories, we will die.　 56　 , in most countries wastes are　 57　put into rivers or into the sea, and there are　 58　 laws to stop this. We know, too, that if the　 59　of the world continues to rise at the present rate, in a few years there will not be enough 60　. What can we do to solve these problems ?
　  If  we eat more vegetables and less　 61　 , there will be more food available for everyone. Land that is used to grow crops　 62　 five times more people than land where animals are kept. Our natural resources will　 63　 longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth 64　 .
　　Finally, if we educate people to think about the problems, we shall have a better and clearer 65　in the future.

　　Can you imagine what life would be like if there is no telephone? You could not call your friends 1 the phone and talk to them. If fire 2 out in your house, you could not 3 the fire department. If somebody were 4 , you could not call a doctor.

　　In our 5 life, we need to communicate with one another. We do this 6 by speaking to other people and listening to 7 they have to say to us, and as we are 8 to them we can do this very 9 . However, our voices will not travel very far even when we 10 . It is thanks to the 11 of the telephone that we are 12 able to communicate with each other 13 hold conversations when we are far 14 . We can hear each other clearly 15 we were in the same room.

　　The man who 16 this possible was Alexander Graham Bell, a Scotsman. Bell, a teacher of visible speech 17 later moved to Canada, 18 all his spare time experimenting. He was 19 active in his research for a means of sending speech by electricity that he left 20 time for his day-to-day work and at one time was almost penniless.

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