题目内容

【题目】In the summer of 1978 an English farmer was driving his tractor through a field of wheat when he discovered that some of his wheat was lying flat on the ground. The flattened wheat formed a circle about six meters across. Around this circle were four smaller circles of flattened wheat. The five circles were in a formation like five dots. During the following years, farmers in England found the strange circles in their fields more and more often.

The circles are called “crop circles” because they appear in the fields of grain usually wheat or corn. The grain in the circles lies flat on the ground but is never broken; it continues to grow, and farmers can later harvest it. Farmers always discover the crop circles in the morning, so the circles probably form at night. They appear only in the months from May to September.

At first, people thought that the circles were a hoax. Probably young people were making them as a joke, or farmers were making them to attract tourists. To prove that the circles were a hoax, people tried to make circles exactly like the ones that farmers had found. They couldn’t do it. They couldn’t enter a field of grain without leaving tracks, and they couldn’t flatten the grain without breaking it.

Many people believe that beings from outer space are making the circles to communicate with us from far away and that the crop circles are messages from them.

Scientists who have studied the crop circles suggested several possibilities. Some scientists say that a downward rush of wind leads to the formation of the circles the same downward lash of air that sometimes causes an airplane to crash. Other scientists say that forces within the earth cause the circles to appear. There is one problem with all these scientific explanations: crop circles often appear in formations, like the five-dot formation. It is hard to believe that any natural force could form those.

【1In the summer of 1978, an English farmer discovered in his field that ______.

A. some of his wheat had been damaged

B. some of his wheat had fallen onto the ground

C. his grain was growing up in circles

D. his grain was moved into several circles

【2The underlined word "hoax" in Paragraph 3 is probably ______.

A. an attempt made to fool people

B. a special way to plant crops

C. an experiment for the protection of crops

D. a research on the force of winds

【3Which of the following may prove that the crop circles are not made by man?

A. The farmers couldn’t step out of the field.

B. The farmers couldn’t make the circles round.

C. The farmers couldn’t leave without footprints.

D. The farmers couldn’t keep the wheat straight up.

【4One explanation given by scientists for the crop circles is that they are made by _____.

A. airplane crashes B. air movement

C. unknown flying objects D. new farming techniques

【答案】

【1】B

【2】A

【3】C

【4】B

【解析】

试题分析:文章讲述的是世界未解之谜之一的麦田怪圈的事情,到目前为止还没有准确的解释。

【1】细节理解题。根据文中第一段语句when he discovered that some of his wheat was lying flat on the ground.可知:一个英国农场主发现他的一些麦田扑到在地里了,故选B

【2】细节理解题。根据根据第三段At first, people thought that the circles were a hoax. Probably young people were making them as a joke理解可知:起初人们以为这是个玩笑。选A。

【3】细节理解题。根据第三段They couldn’t do it. They couldn’t enter a field of grain without leaving tracks,得知:人们不可能做到进入麦田却不留下任何足迹。选C。

【4】推理判断题。根据最后一段语句. Some scientists say that a downward rush of wind leads to the formation of the circles理解可知科学家们猜测麦田出现圈状可能是由于空气流动造成的。选B。

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