单选题 Today there are policemen everywhere, but in 1700, London had no policemen at all. A few old men used to protect the city streets at night and they were not paid.
About 300 years ago, London was starting to get bigger and more and more people began to live there. The city was very dirty and many people were poor. There were so many thieves who stole money in the streets that people stayed in their homes as much as possible.
In 1750, Henry Fielding started to pay a group of people to stop thieves. They were like policemen and were called "Bow Street Runners" because they worked near Bow Street.
Fifty years later, there were 120 "Bow Street Runners", but London had become very big and needed more policemen. So in 1829, the first Metropolitan (or London) Police Force was started with 3000 officers. Most of the men worked on foot, but a few rode horses. Until 1920 all the police in London were men.
Today, the London police are quite well paid and for the few police officers who still ride horses, the pay is even better than for the others.

单选题 In 1700, the men who protected the streets were paid ______.

单选题 About 300 years ago, many people ______.

【正确答案】 D

【答案解析】[解析] 根据第二段的第一句，可以知道从300年前开始，伦敦的居民越来越多。选项A说人们想要离开伦敦，与文章内容不符。选项B说在伦敦有大房子，但文中没有提到。选项C说很多人都变成了警察，而从第四段可以知道，到1829年开始才有了很多警察。D选项说很多人都开始在伦敦居住，符合文章原意。

单选题 People didn"t leave their houses because ______.

【正确答案】 B

【答案解析】[解析] 题目问为什么人们不离开住所，我们可以在第二段的最后一句找到，因为有很多人偷钱，所以人们尽量足不出户，防止被盗。所以答案选B。

单选题 The "Bow Street Runners" ______.

【正确答案】 A

【答案解析】[解析] 根据第三段可以知道Bow Street Runners是类似警察的一群人，所以他们的职能当然是防止偷盗。B选项说他们偷钱，C选项说他们付钱让人偷窃，D选项说他们阻止人们骑马，都不对，所以答案选A。