摘要: The reason why a great barrier has been built across the Thames at Woolwich is that . A. London is very slowly sinking into its foundations B. the level of the river Thames is slowly rising C. extra-high tides could flood a large part of London D. all of the above. C “That’s funny! These fellows in the middle of the plate have died. Dr Alexander Fleming was talking to another doctor in a laboratory in London. He had been studying some germsthat he was growing on a plate. They were very dangerous germs because they caused different kinds of illnesses that could kill people. Dr Fleming found that a mouldhad floated in through the window landing on the plate. It had killed some of the germs it had touched. “This certainly looks promising. Fleming said. “We must grow some of this mould to see if it will kill other germs. He named the strange mould “penicillin . It proved to be a killer of many germs. Fifty mice were given deadly germs and then half of them were injectedwith penicillin. The twenty-five untreated mice died, but twenty-four of those lived that had been treated with penicillin. Dr Fleming wrote a report about what he had found out. Hardly anybody took any notice of it. In 1938 Dr Howard Florey, an Australian working in London, read Dr Fleming’s report and was very interested. He found that penicillin was effective in treating blood poisoning in human beings. When World War II broke out, it was not possible to make enough penicillin in England. Dr Florey went to America where he helped to have enormous amounts of this wonderful drug made. It saved the lives of thousands of soldiers, sailors and airmen who would have died from their wounds if the hospitals had not had penicillin.

网址:http://m.1010jiajiao.com/timu3_id_3077854[举报]

London is the capital of the United Kingdom. It has about seven million people. The river Thames runs through London.

People from all over the world visit London to see Buckingham Palace, the Houses of Parliament, Westminster Abbey and the Tower of London. There are many museums, theatres and parks in London, as well as offices and factories. London began as a Roman settlement called Londinium. The plague(瘟疫) came to London in the 1600s, followed by the Great Fire of 1666. The city was badly bombed in World War II.

London is very slowly sinking into its foundations and the level of the river Thames is slowly rising. As a result, extra-high tides could flood a large part of London. To prevent this happening, a great barrier(屏障)has been built across the Thames at Woolwich. If very high tides happen, the barrier can be raised and London will be safe.

1.London is the capital of _________, which began as a __________ settlement.

A. England; Norman        B. UK; Frenchman  

C. Scotland; English      D. UK; Roman

2.According to the passage, from 1600 to now, ________ great disasters have happened in London.

A. one          B. two           C. three         D. four

3.The reason why a great barrier has been built across the Thames at Woolwich is that_________.

A.London is very slowly sinking into its foundations

B.the level of the river Thames is slowly rising

C.extra-high tides could flood a large part of London

D.all of the above.

 

查看习题详情和答案>>

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网