题目内容

【题目】One day a few years ago, a very funny thing happened to a neighbor of mine. He is a teacher at one of London’s medical schools. He had finished his teaching for the summer term and was at the airport on his way to Russia to give a lecture. He had put a few clothes and his lecture notes in his shoulder bag, but he had put Rupert, the skeleton(人体骨骼) to be used in his lecture, in a large brown suitcase(箱子). At the airport desk, he suddenly thought that he had forgotten to buy a newspaper. He left his suitcase near the desk and went over to the shop.

When he got back he discovered that someone had taken his suitcase by mistake. He often wonders what they said when they got home and found Rupert.

【1】Who wrote the story?

A. The teacher’s neighbor

B. The neighbor’s teacher

C. A medical school teacher

D. Rupert’s teacher

【2】Which of the following might have happened afterwards?

A. the teacher got back Rupert but not the suitcase

B. the teacher got back neither the suitcase nor Rupert

C. the teacher got back the suitcase but not Rupert

D. the teacher got back both the suitcase and Rupert

【答案】

【1】A

【2】A

【解析】

试题分析: 本文讲的是作者的邻居,在机场把演讲要用的人体骨骼丢了

【1】A推理判断题。根据a very funny thing happened to a neighbor of mine. He is a teacher at one of London’s medical schools 理解可知,作者是这个老师的邻居。故选A

【2】A推理判断题。人体骨骼和箱子在一起,都不见了,因为是在机场丢的,所以都找不到了。故选A

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As many as a quarter of all cases of short-sightedness are caused by too great an exposure to sunlight in the first weeks of life, say eye experts.

They are advising all parents to put sunglasses on their babies during the first weeks.

Scientists had already established that over-exposure to sunlight caused shortsightedness in animals.

Researchers who compared the months in which babies were born with whether they needed glasses later on say the principle also applies to humans.

A study of almost 300,000 young adults-the largest of its kind-showed that those born in June and July had a 25 per cent greater chance of becoming severely short-sighted than those born in December or January.

Research leader Professor Michael Belkin, of Tel Aviv University, said it was because prolonged illumination(光照) causes the eyeball to lengthen-causing short-sightedness.

Hence the more light a newborn is exposed to, the more the eyeball lengthens and the worse the short-sightedness will be.

The mechanism which lengthens the eyeball is associated with levels of melatonin(褪黑激素), a pigment (色素) which protects the skin against harmful rays of the sun.

In young babies not enough melatonin is released as protection, meaning they are more vulnerable to sunburn and changes to eyeball shape.

Sight expert Professor Daniel O’Leary, of Anglia Ruskin University in Cambridge, said “At the moment we don’t know the precise cause of why light exposure affects sight, but the evidence seems to prove that it is one of the reasons for people becoming shortsighted.”

1Melatonin is a kind of material to ___________.

A. prevent the eyes from becoming near-sighted

B. protect the skin from harmful sun rays

C. make our body strong

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B. whether light exposure affects sight still needs to be further proved

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D. he tries to give the cause of why light exposure affects sight

【题目】Recordings of angry bees are enough to send big, tough African elephants running away, a new study says. Beehives (蜂窝)-either recorded or real-may even prevent elephants from damaging farmer's crops.

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From a distance, Lucy switched on the pre-recorded sound of angry bees while at the same time recording the elephants with a video camera. Half the elephant groups left the area within ten seconds. Out of a total of 17 groups, only one group ignored the sound of the angry bees. Lucy reported that all the young elephants immediately ran to their mothers to hide under them. When Lucy Played the sound of a waterfall (瀑布) instead of the angry bees to many of the same elephant families, the animals were undisturbed. Even after four minutes, most of the groups stayed in one place.

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