题目内容

【题目】用方框中所给单词或短语的适当形式填空

be involved in, act, wife, serve, marry

1Many young people like watching ________________ movies.

2The policemen's ________________ are going shopping now.

3This restaurant ________________ cheap but excellent food.

4Mr. Liu ________________ for quite a few years, and he loves his wife very much.

5He ________________ writing a play last month.

【答案】

1action

2wives

3serves

4has been married

5was involved in

【解析】

1句意:许多年轻人喜欢看动作片。

考查词性转化。结合所给词汇及句意可知,此空选act(行为)。act指个别具体的、短暂的,简单的动作,而action指抽象的,较长的,复杂的行为。根据句意可知,题干要表达“动作片”,译作:action movies。故答案为action

2句意:那些警察的妻子现在要去购物。

考查名词的复数形式。结合所给词汇及句意可知,此空选wife(妻子)。已知题干的谓语是“are going shopping”,则主语是复数名词,而wife的复数形式是wives。故答案为wives

3句意:这家餐馆供应价廉而美味的食物。

考查动词的时态。结合所给词汇及句意可知,此空选serve(供应)。题干描述restaurant的品质特征,应用一般现在时。已知主语“this restaurant”是单数,谓语动词要用第三人称单数形式。故答案为serves

4句意:刘先生结婚很多年了,他很爱他的妻子。

考查动词的时态。结合所给词汇及句意可知,此空选marry,意为“(和某人)结婚,嫁,娶”,是非延续性动词,与时间段“for quite a few years”连用,须转化为表示状态的形容词短语be married。由题干后半句及“for quite a few years”可知,前半句应用现在完成时。故答案为has been married

5句意:他上个月参与了一个剧本的创作。

考查固定词组的用法。结合所给词汇及句意可知,此空选be involved in,意为“参与”,后接名词或动名词。题干时间状语是“last month”,表示过去,则be要变成was。故答案为was involved in

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【题目】 Young sunflowers turn and swing every day. New findings add to evidence that the plants are animal-like.

Harmer, a professor in the University of California at Davis, Department of Plant Biology, carried out a series of experiments on sunflowers in the field, in pots outdoors and in indoor growth chambers.

By staking plants so that they could not move, Harmer showed that he could destroy their ability to track the sun. He also noticed that sunflowers prevented from moving were not as tough and leafy as those that were free to move. When plants were moved indoor with a settled overhead light, they continued to swing back and forth for a few days.

The indoor plants did start tracking the “sun” again when the apparent source of lighting was moved across the room. The plants could reliably tack the movement and return at night when the artificial day was close to a 24-hour cycle, but not when it was closer to 30 hours.

When sunflowers track the sun, the east sides of their stems grew more rapidly than the west sides. At night, the west sides grew faster as the stem swung the other way. The team identified a number of genes that were expressed at higher levels on the sunward side of the plant during the day or on the other side at night. A plant growth-regulating hormone (激素), called auxin, appears to be a key driver.

The “dance” to the sun cycle obviously slows when the sunflower matures (成熟) and its flowers open up. At that point, the plants stop moving during the day and settle down facing the sun in the east.

“Bees like warm flowers.” Harmer said, adding that the bees are cold-blooded, so landing on a warm flower saves them energy and perhaps feels really good.

“The morning warmth changes the flowers in a way to make them more appealing to insects, perhaps causing them to release more attractive scents earlier in the day.” he said “We’re currently testing this idea.”

1Why did Harmer do the experiment on sunflowers?

A.To see how sunflowers grow upB.To show what sunflowers’ genes are.

C.To study why sunflowers track the sun.D.To check if sunflowers swing in cloudy days.

2What does the underlined word “staking” probably mean in Paragraph 3?

A.breakingB.controllingC.growingD.searching

3What is the result of sunflowers being stopped from moving?

A.They will produce a number of new genes.B.They will grow faster than usual.

C.They won’t swing back though set free.D.They won’t grow well.

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