_______ she did was right. So everyone always believed(in)her.

　 A. What 　 B. Whatever C. How 　 D. When

Dark glasses are sometimes worn to ________the eyes from strong sunlight.

　 A. prevent 　 B. care  C. defend 　 D. protect

Everyone working on Sunday will have _____ pay doubled.

　 A. its 　 B. their C. ones 　 D. one

___that she’s by law old enough to get married, I don’t see how you can stop her.

　 A. Having seen 　 B. To see  C. Seeing 　 D. Seen

Jack _______ yet last night, otherwise he _______ me.

　 A. mustn’t have arrived; must have phoned 　  B. can’t have arrived; would have phoned

-Mary, would you like to come to my birthday party??

　-_____.

  A. Of course, you could 　 B. Sure. Go ahead

　 C. Sorry, you may not 　 D. No, you mustn’t

-If you have time tonight，I’d like to invite you to a ball.?　

-That’s very nice of you，but are you ____??

　 A. free 　 B. careful  C. serious 　 D. true

Exercise is ______ as any other to lose unwanted weight.?

　 A. so useful a way 　 B. as a useful way

　 C. as useful a way 　 D. such useful way

People turn to magic(魔力)chiefly as a form of insurance--that is, they use it along with actions that actually bring results. For example, hunters may use a hunting charm(咒語). But they also use their hunting skills and knowledge of animals. The charm may give hunters the extra confidence they need to hunt even more successfully than they would without it. If they shoot a lot of game(獵物), they credit the charm for their success. Many events happen naturally without magic. Crops grow without it, and sick people get well without it. But if people use magic to bring a good harvest or to cure a patient, they may believe the magic was responsible. 

People also tend to forget magic's failures and to be impressed by its surface successes. They may consider magic successful if it appears to work only 10 per cent of the time. Even when magic fails, people often explain the failure without doubting the power of the magic. They may say that the magician made a mistake in reciting the spell or that another magician cast a more powerful spell against the magician.

Many anthropologists(人類學家) believe that people have faith in magic because they feel a need to believe in it. People may turn to magic to reduce their fear and uncertainty if they feel they have no control over the outcome of a situation. For example, farmers use knowledge and skill when they plant their fields. But they know that weather, insects, or diseases might ruin the crops. So farmers in some societies may also plant a charm or perform a magic rite to ensure a good harvest.

16.From the passage, we can learn that the writer of the passage may be _______.

A. a hunter     B. a farmer     C. a magician    D. an anthropologist

17.Which of the following can best serve as the title of the passage?

A. Magic and Hunting.          B. Magic and Farming.

C. Why Magic Works?          D. Why People Believe in Magic?

18. The underlined word “spell”(Paragraph 2) most likely means______.

A. magic words.    B. magic events.    C. words or expressions     D. magicians.

19. People believe in magic because________.

A. magic powers are greater than natural powers

B. magic can turn dreams into reality

C. they are not sure of themselves  

D. magic can bring good results

20. Which of the following statements is NOT true according to the passage?

A. Even though magic fails, believers in magic will explain the reason.

B. Believers in magic usually overstate the power of magic.

C. People use magic to reduce their uncertainty and give them extra confidence

D. Magic can solve problems people can’t deal with in a natural way.

He made another wonderful discovery, ______ of great importance to science.

A. which I think is B. which I think it is  C. which I think it    D. I think is