3.Have you ever had the strange feeling that you were being watched you turn around and,sure enough,someone was looking right at you!
Parapsychologists(心靈學(xué)家) say that humans have a natural ability to sense when someone is looking at them.To research whether such a"sixth sense"really exists or not,Robert Baker,a psychologist(心理學(xué)家) at the University of Kentucky,did two experiments.
In the first one,Baker sat behind unknowing people in public places and stared at the backs of their heads for 5 to 15minutes.The subjects(受試者) were eating,drinking,reading,studying,watching TV,or working on a computer.Baker made sure that the people could not tell that he was sitting behind them during those periods.Later,when he questioned the subjects,almost all of them said they had no sense that someone was staring at them.
For the second experiment,Baker told the subjects that they would be stared at from time to time from behind in a lab setting.The people had to write down when they felt they were being stared at and when they weren't.Baker found the subjects were no better at telling when they were stared at and when they weren't.
Baker concludes that people do not have the ability to sense when they are being stared at.If anyone doubts the results of his two experiments,Baker said,"I suggest they repeat the experiments and see for themselves."
68.Why did Robert Baker do the two experiments?A
A.To study whether humans can sense when they are stared at.
B.To explain when people can have a sixth sense.
C.To show how people act while being watched in the lab.
D.To prove why humans have a sixth sense.
69.The underlined word"exist"in the second paragraph most probably meansD.
A.合理
B.有用
C.研究
D.存在
70.What sense do parapsychologists say that humans have?B
A.A looking feeling.
C.A natural staring ability.
B.A natural ability.
D.A strange thinking.
71.What can we learn from the passage?C
A.People are born with a sixth sense.
B.The experiments support parapsychologists'idea.
C.The subjects do not have a sixth sense in the experiments.
D.Baker wasn't sure about the experiments and he asked others to repeat them.

分析 你是否曾有過奇怪的感覺,當(dāng)你轉(zhuǎn)過身來,被人注視著,果然,有人正看著你!這樣的"第六感"真的存在嗎?一個(gè)心理學(xué)家在肯塔基大學(xué),在第一個(gè)實(shí)驗(yàn)里Baker坐在公共場所和盯著別人的后腦勺5分鐘,受試者說他們沒有感覺到有人在盯著他們.第二個(gè)實(shí)驗(yàn),Baker告訴受試者,他們會(huì)時(shí)常被人盯著,人們要寫下他們什么時(shí)候被盯著什么時(shí)候沒有被盯著,結(jié)果是人們沒有能力感覺什么時(shí)候他們被盯著.實(shí)驗(yàn)證明告訴我們第六感并不存在.

解答 68.A細(xì)節(jié)理解題.根據(jù)第二段的To research whether such a"sixth sense"really exists or not,Robert Baker,a psychologist(心理學(xué)家) at the University of Kentucky,did two experiments.可知兩個(gè)實(shí)驗(yàn)的目的是探究是否存在第六感,所以選A.
69.D 詞義猜測題.根據(jù)后半句Robert Baker,a psychologist  at the University of Kentucky,did two experiments.肯塔基大學(xué)的心理學(xué)家羅伯特•貝克做了兩個(gè)實(shí)驗(yàn).可知此處應(yīng)該是:為了研究這種"第六感"是否真的存在,故exist意為:存在.所以選D.
70.B 細(xì)節(jié)理解題.根據(jù)第二段中Parapsychologists(心靈學(xué)家) say that humans have a natural ability to sense when someone is looking at them.可知心靈學(xué)家說,人類有一種天然的感覺看出有人在看他的自然能力,所以選B.
71.C 推理判斷題.根據(jù)短文To research whether such a"sixth sense"really exists or not,Robert Baker,a psychologist(心理學(xué)家) at the University of Kentucky,did two experiments.主要介紹了兩個(gè)測試第六感的實(shí)驗(yàn),通過實(shí)驗(yàn)告訴我們第六感并不存在,所以選C.

點(diǎn)評 做題時(shí)首先要仔細(xì)閱讀短文,掌握大意,然后結(jié)合具體的題目,找出相關(guān)信息,就可以確定正確答案.

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