[单项选择]Although Japan is now an economic giant, it has one vital weakness that it lacks the ______ material necessary for its industry.
A. original
B. primary
C. crude
D. raw

[单项选择]Colorado now has told participants in the prepaid tuition plan that ______.
A. they would not have to make any other payment later
B. they would not be guaranteed against further payment
C. the plan would cover further tuition increases
D. the plan would be replaced by a guaranteed investment contract

[单项选择]Japan has a long trading tradition.

[单项选择]What has become of Pearman now

[单项选择]The economic reform in Japan has been {{U}}accelerated{{/U}}.
A. sped up
B. put off
C. slowed down
D. stopped

[单项选择]The temple was ruined in the big fire; now it has only its walls （）.
A. left stood
B. left standing
C. to leave to stand
D. leaving standing

[单项选择]Japan has ______ its steps towards putting into effect an international treaty banning chemical weapons.
A. hurried
B. bustled
C. accelerated
D. rushed

[单项选择]Now the public has an unprecedented chance to peer over the shoulders of archaeologists and historians and get a firsthand look at the ______ of the Mongols and their Asian predecessors.
A. legacy
B. bequest
C. converse
D. miracle

[单项选择]

Psychologists now believe that noise has a considerable effect on people’s attitudes and behavior. Experiments have proved that in noisy situations (even temporary ones ), people behave more irritably and less cooperatively; in more permanent noisy situations, many people cannot work hard, and they suffer from severe anxiety as well as other psychologecal problems. However psychologists distinguish between“sound”and “noise”.“Sound”is measured physically in decibels.“Noise”cannot be measured in the same way because it refers to the psychological effect of sound and its level of “intensity”depends on the situation. Thus, for passengers at an airport who expect to hear airplanes taking off and landing, there may be a lot of sound, but not much noise (that is, they are not botered by the noise). By contrast, if you are at a concert and two people behind you are whispering you feel they are talking noisily even if there
A. can be measured in the same way that noise is measured
B. may be extremely harmful to health
C. is not at all different from noise
D. can be measured by machines

[单项选择]

Now that man has actually landed on the surface of the moon, he has learned many new things about it. But one thing man knew before he ever reached the moon was that there was no life on it.
There is no atmosphere (大气层) on the moon. The lack of air means that the moon is not protected from any of the sun’s rays. The sun sends out heat and light radiation (辐射). Life on earth depends on heat and light. But the sun also sends out dangerous kinds of radiation. The earth’s atmosphere protects us from most of them. On the moon, however, there is no atmosphere to stop the radiation. All the sun’s rays beat down on the surface of the moon.
Because there is no atmosphere, the moon’s surface is either extremely hot or extremely cold. As the moon circles around the earth, the side of it that is lighted up by the sun becomes very hot. The temperature there reaches more than 300 degrees Fahrenheit (华氏温度). This is hotter than boiling water. The hot lunar
A. Why is there no air on the moon
B. Why is there no life on the moon
C. Why is the moon hotter than the earth
D. Why is the moon colder than the South Pole

[单项选择]Williamsburg has now been restored so that it looks as it ______ during the 18th century.
A. could
B. would
C. was
D. did

[单项选择]Up to now, the work has been easy.
A. So
B. So long
C. So that
D. So far