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发布时间：2006-07-01 08:10     点击：

A．Sally Ride’s first ride B．space equipment for insects

C．a space experiment with ants D．going to school in New Jersey

61．The project wasn’t a failure because________ .

A．important things were learned B．dead ants are better

C．everything went as expected D．students wrote about it

62．The ants died because________ .

A．weightlessness harmed them B．space caused too much pain

C．no one fed them in space D．they dried out in the desert

63．On the next space trip ,ants________ .

A．will be sent without people B．should not be left in the desert

C．will have to pay double fare D．will escape the trip completely

C

“Mind over matter” is an English saying meaning that we can control our bodies with our minds .Now scientists are finding increasing evidence that our mind can have a great effect on our physical health .Since our mind influences how we feel , it’s not possible to say if someone is ill just because they feel ill .

The influence of the mind on how well we feel is the basis of what is known as the placebo effect .A placebo ( which is Latin for “I shall please”) is a harmless ,inactive substance .Patients are sometimes given placebo pills and begin to feel better because they believe that they have been given real drugs and expect to respond to them .The placebo effect is very strong :research on pain suggests that up to 30% of the effect of most painkillers is a placebo effect .

So if it is so powerful , why don’t doctors use it today ?

According to Dr Persaud , they really do . “All these things like wearing a white coat ,going to a hospital , and being scanned （扫描）have a very strong placebo effect .”he says .

64．According to the first paragraph ,if you feel ill ,________ .

A．you don’t need to see a doctor

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