It’s disturbing to note how many of the crimes we do know about were detected ___not by systematic inspections or other security procedures.A. by accident B. on schedule C. in general D. at intervals

Do scientists know how many cryptic species exist?

A．Not yet.

B．Yes, they do.

C．They will know the answer in another one or two years.

D．They will never know the answer.

We laugh at jokes，but seldom about how they work．

A．we think

B．think we

C．we do think

D．do we think

Water is the __46___ of all the things we eat and drink . Not many people understand this but __47____ quite true . The human body can go without ___48___ for a long time . We’ve got many examples for this . Yet two __49___ three days without water can usually make people __50____ . Man can’t live __51____ water .

Many people don’t understand how ___52__ water the human body needs __53___ work well , and many people , especially young people , do not drink enough , ___54__ in very hot weather . Our body has mostly water , about 65% to 75% . That is to say about two thirds of our body is water . When we do sports , some of the water will get away from our body . __55 _ we don’t drink some water , we won’t have enough water． And if we don’t have enough water , we’ll feel tired and many of us will get ill . So you know how important water is to us .

46.___________

( )46. A. important

B. most important

C. more important

D. different

What do we know about the rich men in the 17th century?

A.They tended to wear clothes without bottons.

B.They were interested in historical matters.

C.They were mostly dressed by servants.

D.They drew their swords from the left.

I know you are planning a trip to Europe this autumn.Do you know_______?

A：how much it will cost

B：how much has it cost

C：how much cost it will

D：how many will it cost

How many hours of housework did men do every week in the 1970s?

A. About 23. B. About 26.

C. About 13. D. About y.

How many hours of housework did men do every week in the 1970s?

A．About 23.

B．About 26.

C．About 13.

D．About y.

What do we know about Olivetti ?

A.It produced the best typewriter in the word.

B.It designed the word’s first mainframe. computer.

C.It exported more typewriter than other computer.

D.It has five independent companies with its head office in lvrea.

This is not the world we know. This world is controlled by computers. Men and women can be seen, but they are following the orders given to them by machines. The machines were designed by mad scientists, but at some point even the mad scientists were taken over by their super-inventions.

Does this sound familiar? You have probably read something like it in magazines or books, or seen it in a film. Why is it so popular? One of the reasons is that it reflects the fears of many people; fear of the unknown fear of what is not understood or, at least, fear of something that is not completely understood.

The fact is that every day it seems that computers take control of another area of our lives. Some

factory jobs are now done by robots and the robots are controlled by computers. Our bank accounts are managed by computers. At the airport, our tickets are sold by a computer. Certainly, many of these operations are made more

efficient by computers, but our admiration is sometimes mixed with unsafe feelings. And this lack of safety is caused by the fact that we do not know how computers do these things, and we really don't know what they might do next. But we can find out how computers work, and once we understand them, we can use computers instead of worrying about being used by them. Today, there is a new generation of computer wizards who know exactly how computers get things done. These young men and women, usually university students, are happy to sit for hours, sometimes for days, designing programs, not eating, not sleeping, but discovering what can be done by these wonderful slaves which they have learned to control. These computer wizards have learned to use the computer and search for new tasks for their machines.

(1)、According to the passage, our present world is under the control of ______ .

A：mad scientists

B：men and women

C：the unknown fear

D：some super-inventions

(2)、The reason why many people are afraid of computers is that ______ .

A：they don't know anything about computers

B：they haven't really understood computers

C：there are so many computer games

D：computers are often down

(3)、The author mentions computer wizards in order to point out that ______ .

A：computers can be controlled by man

B：there should be more people devoted to computers

C：only young people are interested in computers

D：more time and energy is required to control computers

(4)、This passage is probably written to suggest that ______ .

A：some day computers can deal with all human problems

B：computers can be used in place of traveling to our jobs

C：people should not fear computers

D：computer technology will not meet people's needs in various situations

(5)、The author's attitude towards widely used computers is __.

A：positive

B：anxious

C：worried

D：serious

what do we know about nora?

A．she prefer a room of her own.

B．She likes to work with other girls.

C．She lives near the city center.