3. D

解析：她们本来就是在接受训练，而对于这次测试的结果，可以看出三个人目前在这方面是没有什么值得称赞的，所以继续培训或被解雇的可能性都存在。

2. B

解析：第一个女孩看到嫌疑犯只有“一只眼睛”，第二个女孩看到只有“一个耳朵”，警察对这两个人的回答都感到滑稽、可笑，由此可以推测这张画像是一个人的侧面照。

1. C

解析：警察之所以培训这样的女士，首先是因为她们的长相，但单凭这些是不能胜任侦探工作的，她们还要有敏锐的观察和分析能力。是否需要幽默，文中并没有提到。

12. Which of the following is TRUE?

　　　 A. Edmund Halley was an American scientist.

　　　 B. Halley made his discovery by doing experiments.

　　　 C. Isaac Newton was a famous mathematician.

　　　 D. The orbit of a comet had the shape of an around.

11. This passage in general is about ____.

　　　 A. Halley and other scientists

　　　 B. the orbit of a comet

　　　 C. Newton and Halley

　　　 D. Halley and his discovery

10. Halley made a surprising, but correct prediction in the year____.

　　　 A. 1704　　　　　 B. 1705　　 C. 1706　　　　　 D. 1707

9. Halley made his discovery ____.

　　　 A. by doing experiments

　　　 B. by means of his own careful observation

　　　 C. by using the working of other scientists

　　　 D. by chance

7. More _____ husbands help in the house than _____ husbands. 　

A. British; Danish

B. Italian; Danish　

C. Danish; British

D. Italian; British　

C

　　　 Edmund Halley was an English scientist who lived over 200 years ago. He studied the observations of comets(彗星)which other scientists had made. The orbit of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems.

　　　 However, Halley had a friend named Isaac Newton, who was a brilliant mathematician. Newton thought he had already worked out that problem, but he could not find the papers on which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse(椭圆形).

　　　 Now Halley set to work. He figured out(解决，计算出)the orbits of some of the comets that had been observed by scientists. He made a surprising discovery. The comets that had appeared in the years 1531, 1607, and 1682 all had the same orbit. Yet their appearance had been 75 to 76 years apart.

　　　 This seemed very strange to Halley. Three different comets followed the same orbit. The more Halley thought about it, the ore his thought that there had been three different comets as people thought. He decided that they had simply seen the same comet three times. The comet had gone away and had come back again.

　　　 It was an astonishing idea! Halley felt certain though to make a prediction(预言)of what would happen in the future. He decided that this would appear in the year 1758. There were 53 years to go before Halley’s prediction could be tested. In 1758 the comet appeared in the sky. Halley did not see it, for he had died some years before. Ever since then that comet had been called Halley’s comet, in his honor.

8 　Edmund Halley figured out the orbit of ____.

　　　 A. some different comets appearing several times

　　　 B. the same comet appearing at different times

　　　 C. three different comets appearing at the same time

　　　 D. several comets appearing at the same time

6. From the passage we can see that _____. 　

A. there were more husbands who did the housework than wives　

B. husbands did half of the housework all the time　

C. there were more wives who did the housework than husbands　

D. wives did almost all the housework at home　

5. The subject for the survey is _____. 　

A. how many boys do the housework　

B. who does the housework at home　

C. how many women do the housework　

D. who are more diligent, wives or husbands