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  When people see things that they cannot explain with science and logic, they feel it is mysterious.One of the biggest mysteries of today’s scientific world is how the witch doctors work.While some early ideas about what causes illnesses seem silly to us today, the witch doctors of many uncivilized tribes do cure people based on these old “silly” methods.In other words, these methods work, but we just cannot explain how they work with science.

  In the early days, when people became ill, they went to the “medicine man” or “medicine woman” in the tribe.A medicine man or woman is a combination of a doctor and a spiritual master.People used to believe that illnesses are caused by evil spirits, and it was the medicine man or woman’s job to make these bad spirits leave the sick person.

  Evil spirits can be scared away by loud noises or scary masks, according to tribal beliefs.The medicine man or woman would chant magic words, or special songs, and perform special dances depending on the illness.They also usually use a plant that is supposed to help with the sickness.

  Modern scientists try to explain how such primitive, unscientific ways work.According to researchers, the plants the witch doctors use usually contain drugs that are medicinal or help relieve(减轻)pain, and some Western doctors are now trying to learn about them.As for how the magic words and dances worked to heal people, there is still no clear answer.Some researchers believe that if people believed in the witch doctor, then the magic words and dances gave the sick people hope.When there is hope, the sick person feels better psychologically, and thus recovers more quickly.

(1)

What does the article imply about witch doctors and their medicine?

[  ]

A.

They never worked.

B.

They always worked.

C.

They should be used by today’s doctors.

D.

They may have worked and made some people better.

(2)

This article is about ________.

[  ]

A.

medicinal practice in uncivilized world

B.

medicinal plants used by witch doctors

C.

magical chants and their psychological effect

D.

sick people who needed help

(3)

Which of the following is NOT the witch doctor’s job?

[  ]

A.

Making the evil spirit leave the sick person.

B.

Performing dances sometimes.

C.

Inviting the evil spirits to dine.

D.

using plants to heal a sick person.

(4)

Which of the following is NOT true?

[  ]

A.

Western doctors are learning about the plants witch doctors use.

B.

Witch doctors may have given people hope.

C.

Scientists and researchers believe witch doctors do not really cure people.

D.

People who believe in their doctors feel more hope, and thus recover more quickly.

答案:1.D;2.A;3.C;4.C;
解析:

(1)

此题可用排除法。由文章内容可知D项正确

(2)

本文主要介绍在一些原始部落中人们治病靠的是witch doctor。

(3)

因为他们认为人们生病是邪恶缠身,所以他们认为只要把邪恶驱赶走,人就好了,所以A、B项的说法是对的。D项也是他们治病的方法。只有C项不能说是witch doctor的工作。

(4)

科学家和研究家们认为有时候这些witch doctors的确能治疗人们的疾病。


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How Long Can People Live?

  She took up skating at age 85, made her first movie appearance at age 114, and held a concert in the neighborhood on her 121st birthday.

  Whe n it comes to long life, Jeanne Calment is the world’s recordholder.She lived to the ripe old age of 122.So is 122 the upper limit to the human life span(寿命)?If scientists come up with some sort of pill or diet that would slow aging, could we possibly make it to 150-or beyond?

  Researchers don’t entirely agree on the answers.“Calment lived to 122, so it wouldn’t surprise me if someone alive today reaches 130 or 135,”says Jerry Shay at the University of Texas.

  Steve Austad at the University of Texas agrees.“People can live much longer than we think,”he says.“Experts used to say that humans couldn’t live past 110.When Calment blew past that age, they raised the number to 120.So why can’t we go higher?”

  The trouble with guessing how old people can live to be is that it’s all just guessing.“Anyone can make up a number,”says Rich Miller at the University of Michigan.“Usually the scientist who picks the highest number gets his name in Time magazine.”

  Won’t new anti-aging techniques keep us alive for centuries?Any cure, says Miller, for aging would probably keep most of us kicking until about 120.Researchers are working on treatments that lengthen the life span of mice by 50 percent at most.So, if the average human life span is about 80 years, says Miller,“adding another 50 percent would get you to 120.”

  So what can we conclude from this little disagreement among the researchers?That life span is flexible(有弹性的),but there is a limit, says George Martin of the University of Washington.“We can get flies to live 50 percent longer,”he says.“But a fly’s never going to live 150 years.”

  “Of course, if you became a new species(物种),one that ages at a slower speed, that would be a different story,”he adds.

  Does Martin really believe that humans could evolve(进化)their way to longer life?“It’s pretty cool to think about it,”he says with a smile.

(1)

What does the story of Jeanne Calment prove to us?

[  ]

A.

People can live to 122.

B.

Old people are creative.

C.

Women are sporty at 85.

D.

Women live longer than men.

(2)

According to Steve Austad at the University of Texas, ________.

[  ]

A.

the average human life span could be 110

B.

scientists cannot find ways to slow aging

C.

few people can expect to live to over 150

D.

researchers are not sure how long people can live

(3)

Who would agree that a scientist will become famous if he makes the wildest guess at longevity?

[  ]

A.

Jerry Shay.

B.

Steve Austad

C.

Rich Miller

D.

George Martin

(4)

What can we infer from the last three paragraphs?

[  ]

A.

Most of us could be good at sports even at 120.

B.

The average human life span cannot be doubled.

C.

Scientists believe mice are aging at a slower speed than before.

D.

New techniques could be used to change flies into a new species.

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