In the old days, in London, the smog（烟雾）was very thick. Car and bus drivers __1__ to drive very slowly because they could __2__ see the road clearly in front of them even during the daytime. People did not like going out in the smog __3__. If they had to go out, they wore smogmasks（防雾面具）over their faces.

　　In December 1952, a very thick __4__ cloud came down over London. It was the __5__ smog Londoners had ever seen. __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.”

A. writing　　　　   B. write　　　　  C. to write　　　　 D. wrote

阅读理解

　　In the old days in Europe, people believed that trees were embodiment (化身) of powerful beings. In the sixteenth century, German families began to bring green trees into their homes during the Christmas season. By the seventeenth century, they were known as Kristbaume (Christmas trees) and were being decorated with fruits, candies, cookies and candles.

　　The first Christmas trees in America were set up by German immigrants (移民) in the 1800s. Now at Christmas time decorated trees stand in about two-thirds of American homes. The modern American tree is unusually covered with coloured balls and strings of coloured lights.

根据短文，判断正误。正确的写T，错误的写F。

1．The passage is mainly about Christmas history.

2．Christmas trees were first used in the sixteenth century in Germany.

3．The underlined word “century” means one hundred years.

4．People in the old days used Christmas trees during Christmas season because they liked to use it to decorate the house.

5．German people brought the custom (风俗) of using Christmas trees to America.