冰水混合物的温度是0℃，低于-4℃时，水可能凝结成冰，现在气温已经在零下，下列选项正

Chinatown is the name given to an area in the middle of London. It is just between Leicester Square and Shaftsbury Avenue. Gerrard Street is at the center and is the most important street in the area. There is a large Chinese community(社区) with a lot of Chinese restaurants, Chinese supermarkets and shops in this street.

In the 1950s, it was a poor area and everything was very cheap. At the same time, the world rice market changed and thousand of farm workers in Hong Kong lost their jobs. They began arriving in London to look for work. They found jobs in the restaurants in this area. Many British people like Chinese food, and the restaurants were popular.

These restaurant workers often worked 17 hours a day and had no time to learn English. As more Chinese arrived, more shops and businesses grew up. Wives came and joined their husbands and children came and joined their fathers. The community grew, and Chinatown was born.

In the 1970s and 1980s, British-born Chinese started to have a better education and this brought economic(经济的) success to the area. Many families moved out of Chinatown, and there was more space for businesses. Gerrard Street become a street only for visitors and was soon a popular place for tourists.

Now everyone knows about London’s Chinatown. During the Chinese New Year, the streets are seen with flags and thousands of Chinese go into the streets. For most of the year, though, Londoners and tourists go there mainly for the food in the Chinese restaurants. They best restaurants are the ones where the Chinese eat.

小题1:Is this Chinatown in the middle of London?

小题2: Ws the area rich or poor in the 1950s?

小题3:Why did the restaurant workers have not time to learn English?

小题4:When did British-born Chinese start to have a better education?

小题5:What are the main points about Chinatown in this passage?

阅读理解

     The very wealthy English Baron Fitzgerald had only one child, a son, who understandably was the

apple of his eye. His wife died when the child was in his early teens. So Fitzgerald devoted himself to

fathering the kid. Unfortunately the son died in his late teens.

     Meanwhile, Fitzgerald's wealth greatly increased. He spent a lot on art works of the masters. Later

Fitzgerald himself became seriously ill. Before his death, he had carefully prepared his will as to how his

wealth would be settled-to sell his entire collection at an auction(拍卖).

     Because of the large quantity and high quality of his collection, a huge crowd of possible buyers

gathered for the auction. Many of them were museum directors and private collectors eager to bid(出

价). Before the auction, the art works were shown, among which was a painting of Fitzgerald's son by

an unknown artist. Because of its poor quality, it received little attention.

     When it was time for the auction, the auctioneer gaveled(敲槌)the crowd to attention. First the

lawyer read from Fitzgerald's will that the first art work to be auctioned was the painting of his son.

     The poor-quality painting didn't receive any bidders. . . except one-the old servant who had served

the son and loved him, and who for emotional reasons offered the only bid.

     As soon as the servant bought the painting for less than one English pound, the auctioneer stopped

the bidding and asked the lawyer to read again from the will. The crowd became quiet, and the lawyer

read from the will: "Whoever buys the painting of my son gets all my collection. "Then the auction was

over.

1. The English Baron Fitzgerald was __________.

A. a museum director  

B. a master of art    

C. an art collector

D. an art dealer

2. Why did the old servant bid for the painting of Fitzgerald's son?

A. He was devoted to the family.

B. He saw that no one bid for it.

C. He knew the content of the will.

D. He found it cheap for him to buy.

3. Fitzgerald's will showed __________.

A. his desire to fool the bidders        

B. his invaluable love for his son

C. his sadness at the death of his son

D. his regret of having no children to take over his wealth

八核胚囊是（）。

A.孢子体

B.雄配子

C.雌配子

D.雌配子体

下列物品属于带有有效期的救生器材包的是（）

A.信号弹

B.水净化药片

C.海水着色剂

D.烧伤药膏

压缩机组现设有（）个联锁。