In the old days，in London，the smog was very thick. Car and bus drivers    1      to drive very slowly they could        2         see the.road in front of them even during the daytime. People did not like going out in the smog.    3    they had to go out，they wore smog masks over their faces.

　　In December 1952，a very，     4     dark cloud came down over.London.It was the       5      smog Londoners had ever had.        6       of it was bad factory smoke. Nearly fifty people died in road accidents. But many more people became unhealthy.The smog was very        7       for old people and children.One man said，"The streets were almost        8        because people stayed at home as much as possible.The air was very thick，and you could almost cut it with a knife."

　　After three weeks，the smog began to         9       .But in the following weeks and months，over 4000 people died as a         10        of the smog.

　　(      )1 A.hurried B.stayed C. had D.minded

　　(      )2. A.already B.easily C.luckily D. hardly

　　(      )3 A.If B.So C.Though D.Whether

　　(      )4. A.thin B.thick C.light D.clear

　　(      )5. A.furthest B.hottest C.worst D.nicest

　　(      )6. A. Much B.Many C.Few D. A few

　　(      )7. A. quiet B.dangerous C.favorite D.weak

　　(      )8. A.busy B.empty C.enjoyable D.dirty

　　(      )9. A.arrive B.shine C.forget D.lift

　　(      )10. A.beginning B.part C.usual D.result

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