[题目]The officer recommended the document back to the base immediately.A. referred to being sent B. should refer to being sentC. referred to should send D. referred to be sent 题目和参考答案——青夏教育精英家教网—

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【题目】The officer recommended the document _______ back to the base immediately.

A. referred to being sent B. should refer to being sent

C. referred to should send D. referred to be sent

【答案】D

【解析】考查虚拟语气和非谓语动词。句意为军官建议将所提到的文件立即送回基地。recommended表示“建议”时后面应为（should）+do, referred to是过去分词短语做后置定语，修饰document。且document与send之间是被动关系，故选D。

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【题目】The idea of being able to walk on water has long interested humans greatly. Sadly, biological facts prevent us ever accomplishing such a thing without artificial aid---we simply weigh too much, and all our mass pushes down through our relatively small feet, resulting in a lot of pressure that makes us sink.

However, several types of animals can walk on water. One of the most interesting is the common basilisk Basilicus basilicus, a lizard (蜥蜴)native to Central and South America. It can run across water for a distance of several meters, avoiding getting wet by rapidly hitting the water’s surface with its feet. The lizard will take as many as 20 steps per second to keep moving forward. For humans to do this, we，d need huge feet that we could bring up to our ears in order to create adequate w hitting. ’’

But fortunately there is an alternative: cornflour. By adding enough of this common thickening agent to water (and it does take a lot), you can create a “non-Newtonian” liquid that doesn’t behave like normal water. Now, if the surface of the water is hit hard enough, particles(粒子）in the water group together for a moment to make the surface hard. Move quickly enough and put enough force into each step, and you really can walk across the surface of an adequately thick Liquid of cornflour.

Fun though all this may sound, it’s still rather messy and better read about in theory than carried out in practice. If you must do it, then keep the water wings handy in case you start to sink--and take a shower afterward!

【1】Walking on water hasn’t become a reality mainly because humans______.

A. are not interested in it

B. have biological limitations

C. have not invented proper tools

D. are afraid to make an attempt

【2】What do we know about Basilicus basilicus from the passage?

A. It is light enough to walk on water.

B. Its huge feet enable it to stay above water.

C. It can run across water at a certain speed.

D. Its unique skin keeps it from getting wet in water.

【3】What is the function of the cornflour according to the passage?

A. To create a thick liquid.

B. To turn the water into solid.

C. To help the liquid behave normally.

D. To enable the water to move rapidly.

【4】What is the author’s attitude toward the idea of humans’ walking on water?

A. It is risky but beneficial.

B. It is interesting and worth trying.

C. It is crazy and cannot become a reality.

D. It is impractical though theoretically possible.

【题目】When we can see well, we do not think about our eyes very often. It is only when we cannot see perfectly that we come to see how important our eyes are.

People who are nearsighted can only see things that are very close to their eyes. Many people who do a lot of close work, such as writing, reading and sewing（缝纫）, become nearsighted. Then they have to wear glasses in order to see distant things clearly.

People who are farsighted（远视的）suffer from just the opposite problem. They can see things that are far away, but they have difficulty reading a book unless they hold it at arm’s length. If they want to do much reading, they must get glasses too.

Other people do not see clearly because their eyes are not exactly the right shape. This, too, can be corrected by glasses. Some people’s eyes become cloudy because of cataracts（白内障）. Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.

When night falls, colors become fainter to the eye and finally disappear. After your eyes have grown used to the dark, you can see better if you use the sides of your eyes rather than the centers. Sometimes, after dark, you see a small thing to one side of you, which seems to disappear if you turn you head in its direction. This is because when you turn your head, you are looking at the thing too directly. Men on guard duty sometimes think they see something moving to one side of them. When they turn to look straight at it, they cannot see it any more, and they believe they were mistaken. However, this mistake happens because the center of the eye, which is very sensitive(敏感的) in daylight, is not as sensitive as the sides of the eyes after dark.

【1】We don’t know that our eyes are of great importance until _____.

A. we think about our eyes B. we cannot see clearly

C. we wear glasses D. we have to do much reading

【2】According to the passage, a _____ is more likely to be nearsighted.

A. tailor B. doctor

C. guard D. painter

【3】Those who suffer from cataracts _____.

A. will become blind B. cannot be cured（治愈）

C. may be cured D. must move to other places

【4】People who are farsighted _____.

A. cannot do a lot of close work without glasses

B. can only see things that are very close to their eyes

C. have difficulty reading a book if they hold it at arm’s length

D. have the same problem as the nearsighted people

【5】To see a small thing at night, it is better to look ______.

A. with wide open eyes

B. with half- shut or narrowed eyes

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Tips for Cycle Trips

Cycling has many advantages as a form of travel, as it is the fastest way to travel by human Power, and slow enough to allow the type of local involvement that is impossible with powered travel．Cycle travel is a cheap form of transportation．

Distance

On level terrain（地形）,without a headwind, a cyclist of average fitness on a touring bike can comfortably cover 60-120km a day．Distances of up to 250km a day are possible, but anything much beyond 120km will require considerable physical tension and not allow many stops to enjoy the places you visit．For many,80-100km a day will be the most suitable distance to aim for, as it will give a sense of achievement and also leave plenty of time for meals and activities．

Geography

The gradient（坡度）of the trip will reduce your range．A basic rule is that for every 100 metres of altitude you climb, you should add an extra 15 minutes to your journey time．In hilly or mountainous areas, the easiest routes for cycling are downstream along major rivers, as overall they will be downhill．A long, roundabout route along a river will usually be easier than a short, direct route over a hill or mountain pass．However, it is worth bearing in mind that the most scenic routes often come from hilly terrain．

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C．130km. D．250km.

【2】Form the passage, we can learn that_____________.

A．high quality food is easy to get on long trips

B．hotels seldom provide accommodation for cyclists

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