For what reason is Titanic believed to be the safest ship ever？（)

A.what

B.which

C.how

D.why

A.what

B.which

C.why

D.when

A.because

B.that

C.which

D.what

A.why

B.that

C.what

D.which

What was the reason for the taxi company not being able to pick him up？

A．More people were riding in taxis on rainy days.

B．The writer didn't give the correct address.

C．The taxi drivers refused to work.

D．The taxi drivers didn't like to drive long distance.

A、The reason why it’s possible to travel backwards and forwards in space.

B、The reason why it’s possible to travel backwards and forwards in time.

C、Why is time and space exactly the same thing.

D、Why doesn’t light travel in a straight line.

rious individuals' minds？

A.Because individuals are driven by different goals to become successful.

B.Because adverse people are often too resistant to be encouraged.

C.Because forcing to change can’t produce the desirable outcome.

D.Because making a change doesn’t guarantee a bright future at all.

A．They don’t have enough time

B．They are prevented by their families．

C．They fear that their abilities are share

D．They don’t expect to become volunteers．

to routerRT - 3 via internal BGP. What is the reason that router RT - 3 chose router RT - 1 as its best path tonetwork 131.25.0.0/16.（）

A. It has a better router ID

B. It advertises a lower autonomous system

C. It advertises t he best AS - path

D. It advertises the best local preference

E. It advertises the best origin code

F. It advertises the best MED

t that it should include foreign languages and the study of foreign cultures；a mastery of English, including the ability to write and speak well, because communications have become all-important in the modern world. and also because “a person who doesn't speak and write Clearly doesn't reason clearly either” ; some knowledge of the social sciences(sociology, psychology)that deal with human relations and human problems；some basic knowledge of modem information systems, since the educated professionals of tomorrow will have to understand their machines. Is that all？ “No, of course not. ”answer the educators, “We have not mentioned the two great building blocks of education：history and literature!”

Is this truly the best modern education？ Perhaps. But every educator would add or subtract a few subjects. And no matter what list of courses would be offered, it would not be approved by all. Not only do the professors have their own ideas on the matter, but the students have theirs' too. “I don't believe, ”protested a Harvard student when his university revised its programs, “I don't believe that colleges have the fight to define what an educated person is. ”But then, who has？

at they are poor. And even if a person is poor he doesn't feel really poor when he has a car.

Henry Ford was the man who first started making cars in large【22】He probably didn't know how much the car was going to【23】American culture. The car made the United States a nation on wheels. And it helped make the United States what it is today.

There are three main reasons the car【24】so popular in the United States. First of all, the country is a huge one and Americans like to move around in it. The car provides【25】comfortable and cheapest form. of all the means of transportation. With a car people can go to any place without spending a lot of money.

The second reason cars are popular is the fact that the United States has never really【26】an efficient and inexpensive form. of public transportation. Long-distance trains have never been as common in the United States as they are in other parts of the world. Nowadays there is a good system of air service【27】by planes. But it is too expensive to be used frequently.

The third reason is the most important one, though. The American spirit of independence is【28】really made cars popular. Americans don't like to wait for a bus, or a train or even a plane. They don't like to have to【29】an exact schedule. A car gives them the freedom to schedule their own time. And this is【30】that Americans want most to have.

(61)

A．the

B．an

C．a

D．not