单选题In July 1994, Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet (彗星). When the fragments (碎片) landed in the southern part of the giant planet, the explosions were watched by scientists here on earth. But what if our own planet was hit by a comet? The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two fragments will probably hit the southern part of the Earth. The news has caused panic. On 17 July, a fragment four kilometres wide enters the Earth's atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometres an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The wave moves into the Indian Ocean and heads towards Asia. Millions of people are already dead in the southern part of the Earth, but the north won't escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilization has collapsed. No more than 10 million people have survived. Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs (恐龙) were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a space fragment. The dinosaurs couldn't survive in the cold climate that followed and they became extinct. Will we meet the same end?

单选题{{B}}B{{/B}} Old Japanese living alone can now hire a "family" for lunch and a few hours' pleasant talk. Just give them a ring and ask for, say, a daughter, son-in-law and grandchild. They will show up at your door, and greet you emotionally as if they hadn't seen you for years. Some 15 couples have so far hired "families". "We have nearly 80 people on the waiting list," said the president of the company that offers such services. "What is common about these senior citizens is that they are thirsty for human love. We are helping them make their dreams come true." Where once big families with three or more generations living together were common, now numbers are reducing fast. In cities there are very few indeed. Many old people see their families only rarely (稀少地,难得地) , if not at all. This may be because the children's bosses have sent them to a distant city, even abroad, or just because busy family members cannot find time to visit their parents. "We've seen many eases in which parent-children relations are not in a happy state," company president continues. "When a son finally visits his parents after a long while, it is often just to ask for money or for them to let him have their property (财产) early." Loneliness is not a one-way street. "One young mother came to us to ask about grandparents," he added. The company is now developing into other fields. Their services include providing "employees" (雇员) for businessmen to scold and "lovers" for young people unluckly in love. Company's "lovers" for hire is not a service to be misunderstood, company president makes clear. "You shouldn't think about our lover too romantically," he said. "She's there to act as an adviser (顾问)on how to find a girl- friend."

单选题Careless driving ______ a lot of high accidents. A. affects B. makes C. causes D. results

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单选题______strong and tall, he can be a successful sportsman.

单选题I am not going to talk on the point ______. It's neither important nor very interesting.[A] any far[B] any further[C] any farther[D] much more

单选题Nine in ten parents said there were significant differences in their approach to educating their children compared with ______ of their parents.

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单选题Wheredoestheconversationtakeplace?A.Onthephone．B.Inthestreet．C.Inarestaurant．

单选题What happened to Addison when he was on his way home?

单选题"There is nothing new under the sun" really implies that

单选题 Glynis Davis: I first piled on the pounds when I was in the family way and I couldn't lose them afterwards. Then I joined a slimming(瘦身) club. My target was 140 pounds and I lost 30 pounds in six months. I felt great and people kept saying how good I looked. But Christmas came and I started to slip back into my old eating habits. I told myself I'd lose the weight at slimming classes in the New Year... But it didn't happen. Instead of losing the pounds, I put them on. I'd lost will-power and tried to believe that the odd bags of fish and chips didn't make any difference but the scales don't lie. Roz Juma: To be honest, I never weigh myself any more -- I've learnt to be happy with myself. It seemed to me that I would feel sorry about every spoonful of tasty food that passed my lips. My idea is simple. You shouldn't be too much thinking about food and dieting. Instead, you should get on with life and stop dreaming of a superthin body. This is obviously the size I meant to be and, most of all, I'm happy with it. Lesley Godwin: I was very happy after winning Young Slimmer of the Year. I'd look in the mirror, unable to believe this slim lady was me! That might trove been my problem -- perhaps from then on I didn't pay any attention to myself. Winning a national competition makes everything worse, though, because you feel the eyes of the world are fixed upon you. I feel a complete failure because I've put on weight again.

单选题The waterfall_______the rocks.A. wears downB. wears offC. wears awayD. wears out

单选题When are they going to meet?

单选题What does the teacher ask his students to call him?

单选题Whatarethetwospeakersprobablytalkingabout?

单选题-- Don't forget to come to my birthday party tomorrow.-- ______.