单选题______ such heavy pollution already, it may now be too late to clean up the river.A. SufferingB. SufferedC. To sufferD. Having suffered

单选题Most people have heard of Shakspeare and probably know something of the plays that he wrote. However, not everybody knows much about the life of this remarkable man, except perhaps that he was born in the market town of Stratford-upon-Avon and that he married a woman called Anne Hathaway. We know nothing of his school life. We do not know, for example, how long it lasted, but we presume that he attended the local grammar school, where the principal subject taught was Latin. Nothing certain is known of what he did between the time he left school and his departure for London. According to a local legend, he was beaten and even put in prison for stealing rabbits and deer from the estate of a neigh bouring landowner, Sir Thomas Lucy. It is said that because of this he was forced to run away from his native place. A different legend says that he was apprenticed to a Stratford butcher, but did not like the life and for this reason decided to leave Stratford. Whatever caused him to leave the town of his birth, the world can be grateful that he did so. What is certain is that he set his foot on the road to fame when he arrived in London. It is said that at first he was without money or friends there, but then he earned a little by taking care of the homes of the gentlemen who attended the plays at the theatre. In time, as he became a familiar figure to the actors in the theatre, they stopped and spoke to him. They found his conversation so brilliant that finally he was invited to join their company.

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单选题Whatever our differences as human beings are, we all think we're more like the rest of the animal world than we realize. It is said that we share 40 percent of our genetic (遗传的) structure with the simple worm. But that fact has helped Sir John Sulston win the 2002 Nobel Prize for Medicine. Sir John is the founder of the Sanger Institute in Cambridge, which was set up in 1992 to get further understanding of the human genuine (染色体组). To help them do this, they turned to the worm. The nematode (线虫类的) worm is one of the earliest creatures on planet earth. It is less than one millimeter long, completely transparent and spends its entire life digging holes through sand. But it still has lots to say about human life, and what can be done to make it better. What the worm told Sir John and his colleagues was that each of cells in the human body is programmed like a computer. They grow, develop and die according to a set of instructions that are coded in our genetic make-up. Many of the diseases that humans suffer from happen when these instructions go wrong or are not obeyed. When the cell refuses to die but carries on growing instead, this leads to cancer. Heart attacks and diseases like AIDS cause more cell deaths than normal, increasing the damage they do to the body. Sir John was the first scientist to prove the existence of programmed cell death.

单选题What is the company going to do?

单选题Our new ______ has four bedrooms and a sitting room.[A] family[B] home[C] house[D] place

单选题I wish I _________ able to talk with him when he was here last ningt.

单选题The______ has become extremely tense. A war could break out any time between the two sides.

单选题In the traffic accident, my uncle came close to______.[A] be killed[B] killing[C] kill[D] being killed

单选题--Is there a fog in the evening? --There ______ be. I'll make a phone call to find it out.

单选题[此试题无题干]

单选题Wheredoesthisconversationtakeplace?

单选题You want to buy a sport car, sir? We've got several models for you ______. A.to choose B.for choosing C.to choose from D.to be chosen from

单选题—Have a sweet dream.—________.

单选题She ______ the train until it disappeared in the distance, with tears filled in her eyes.

单选题I knew the manager has been here for several days．because he came to see my father ______day．

单选题—Can I help you? —Yes. I bought this radio here yesterday, but it______.