题目内容

The suggestion they all objected to________to be effective finally.

A．proving  B．prove     C．had proved     D．proved

D

【解析】

试题分析：句意：他们都反对的那个建议最终证明是有效的。这里they all objected to是定语从句，先行词是suggestion，关系词作宾语在这里省略了，空格处缺少整个句子的谓语动词，故排除AB，过去完成时是一个相对的时态，必须有一个它的参照的过去式，而这里没有，根据句意故选D。

考点：考查动词时态的用法。

点评：本题难度适中。动词时态是高中阶段的重难点之一，高中要求掌握的时态需要考生牢记它们的用法，但是时态必须要结合一定的语境才能做出正确的判断。

即学即练：——Bob has gone to California.

——Oh, can you tell me when he        ?

A. has left    B. left    C. is leaving   D. would leave

解析：B。句意：“——Bob已经去了加利福尼亚。——噢，你能告诉我他什么时候离开的?”Bob has gone to California，去的动作已经发生过，说明他离开的动作发生在过去，因此使用一般过去时。选B。

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     [1] Doctors may soon have some suggestions for health that even kids will like: more playtime. European
and international health experts say a new study makes the most convincing case for the benefits of children
being active. They say the research may lead to new guidelines saying youngsters aged between 5 and 16 need
to be active up to 1.5 hours a day.
     [2] Experts said the study doesn't mean children need to be on treadmills (跑步机) or in a soccer
leagues-they just need to be able to run around and play physically, even for short bursts of time.
     [3] The study looked at 1,732 9-year-olds and 15-year-olds from Denmark, Estonia and Portugal. Physical
activity was observed for four continuous days. Despite differences among the three coun- tries where children were observed, the benefits of physical activity were the same.
     [4] About 40 percent of those observed were reasonably ac- tive, while the rest were sedentary, researchers said. The study found that the benefits of physical activity applied to all children- not just to obese ( 肥胖的)
children normally thought to be at a higher risk.
     [5] While much attention has been paid to children's bad eat- ing habits,this study calls for equal weight to
be placed on activity levels.
     [6] "We don't need to be getting kids running on treadmills in the gym." said Cavil."We need to encourage
kids to play." One of the study's key findings, he explained, is that it proves the benefit of short bursts of activity, rather than a need for continuous exercises.
     [7] But _____ perhaps the greatest factor in children's physical activ- ity will be the parents themselves."It's
not just that children should be more active,it's the whole family," said Weiss."Parents should be role models."
1. What idea can we get from the researchers' finding in the pas- sage?( No more than 15words)
________________________________________________________________________________________
2. What do you think parents should do to help their kids?( No more than 15 words)
________________________________________________________________________________________
3. What do the children need to do to follow the doctors' sugges- tion?( No more than 15 words)
________________________________________________________________________________________
4. Please explain the underlined word in English.( Only one word)
________________________________________________________________________________________
5. Translate the underlined sentence in the last paragraph into Chinese.
________________________________________________________________________________________

The population of the earth goes on increasing at its present rate and there will eventually not be enough resources left to sustain life on the planet. By the middle of the 21st century, if present trends continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on earth will make it necessary for us to look for open space somewhere else. But none of the other planets in our solar system are capable of supporting life at present. One possible solution to the problem, however, has recently been suggested by an American scientist, Professor Carl Sagan.

Sagan believes that before the earth’s resources are completely exhausted it will be possible to change the atmosphere of Venus（火星）and to create a new world almost as large as earth itself. The difficulty is that Venus is much hotter than the earth and there is only a tiny amount of water there.

Sagan sugges that algae（藻类）organisms, which can live in extremely hot or cold atmospheres and at the same time produce oxygen, should be developed in conditions similar to those on Venus. As soon as this has been done, the algae will be placed in small rockets.     Spaceships will then fly to Venus and fire the rockets into the atmosphere. In a fairly short time, the algae will break down the carbon dioxide into oxygen and carbon.

When the algae have done their work, the atmosphere will become cooler, but before man can set foot on Venus it will be necessary for the oxygen to produce rain. The surface of the planet will still be too hot for men to land on it but the rain will eventually fall and in a few years something like earth will be reproduced on Venus.

1．In the long run, the most difficult problem caused by population growth on earth will probably be the lack of         .

       A．food                   B．oil                       C．space                  D．resources

2．Carl Sagan believes that people might live on Venus because         .

       A．it might be possible to change its atmosphere

       B．its atmosphere is the same as the earth’s

       C．there is a good supply of water on Venus

       D．the days on Venus are long enough

3．Algae can be developed on Venus because they are able to         .

       A．live in very hot temperatures                 B．live in very cold temperatures

       C．produce oxygen                                   D．all of the above

4．According to the writer, the most key condition for man to land on Venus eventually is that         .

       A．the algae have done their work              B．the atmosphere becomes cooler

       C．there is enough oxygen                         D．it rains there

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