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[主观题]

The professor's tests show that_____.A．our brains shrink as we grow oldB．the front section

The professor's tests show that_____.

A．our brains shrink as we grow old

B．the front section of the brain does not shrink

C．seventy-year-olds have better brains than sixty-year-olds

D．brain contraction may vary among people of the same age

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更多“The professor's tests show tha…”相关的问题

第1题

A．student'sB．professor'sC．assistant'sD．librarian's

A.student's

B.professor's

C.assistant's

D.librarian's

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第2题

What the Professor talked about was too difficult; it's really___my head.

A.in

B.over

C.above

D.off

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第3题

The professor's new theory went _________ the capacity of the audience.

A.over

B.beyond

C.out

D.away

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第4题

Professor Smith's book will show you______can be used in other contexts.A．that you have ob

Professor Smith's book will show you______can be used in other contexts.

A．that you have observed

B．that how you have observed

C．how what you have observed

D．how that you have observed

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第5题

After the war Fleming specialized______bacteriology, and in 1924 he became professor of ba

cteriology at St. Mary's Hospital.

A．with

B．in

C．on

D．by

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第6题

—This is English Department of Beijing University. —Hi, I'm a student in English Departmen

t. I need to know the foreign professor—Mr. Smith's email address. — ______ . I'm sorry, Mr. Smith does not have an email address in our system.

A．Just a minute

B．I see

C．At your service

D．It's you

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第7题

下面的程序段运行结果为_______。public class ExampleStringBuffer { public static void ma

in(String args[]){ StringBuffer sb=new StringBuffer("test"); System.out.println("length="+sb.length()); System.out.println("charAt="+sb.charAt(3));

A.length=20 charAt=t

B.length=20 charAt=s

C.length=4 charAt=s

D.length=4 charAt=t

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第8题

--What’s the matter？ You really look down. -- _______. --Well, better luck next time.

A、Why, I always look up to you

B、I failed an important test

C、I have a bad cold

D、Me？ I never look down upon anybody

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第9题

Researchers at Womens Hospital in Boston will______.A．make a follow-up study of the same 3

Researchers at Womens Hospital in Boston will______.

A．make a follow-up study of the same 37 subjects

B．spend more money making flavanol drinks

C．take more time to test Small"s results

D．do similar experiments on a larger scale

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第10题

Why did the scientists at the University of California make the experiment？A．To help child

Why did the scientists at the University of California make the experiment？

A．To help children in hospital recover from their illness.

B．To look for the evidence of laughter's power in women patients.

C．To test the effect of laughter on children who were seriously ill.

D．To see whether laughter could replace some active exercises.

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第11题

The timing of flu season is a little hard to predict. Part of what makes it unpredictable

is that scientists still don t understand exactly why we have one at all. There have been lots of theories: One theory is that people spend more time indoors, with the windows closed, breathing each other s air. Other scientists have argued that cold of winter weakens our immune systems. A third theory is that the flu virus lives in the cold, dry air, but suffers in the warm, humid air. For a while, scientists had a hard time testing these theories: they needed to run experiments, but researchers aren t allowed to infect humans with illnesses, and most lab animals arent affected by the flu the same way people are. In 2007, a medical researcher named Peter Palese found an 80-year-old journal article that reported that guinea pigs (豚鼠)get infected and pass on the flu just like humans. Palese decided to test Theory 3. The research team led by Palese ran several experiments and in each experiment, they injected half the guinea pigs with influenza A (the common flu), and put them in a box next to a box of uninfected animals. At a temperature of 41 degrees, all four of the exposed guinea pigs caught the flu, but when Palese repeated the experiment at 68 degrees, only one of the animals was infected. And when he ran the test at 86 degrees, none of the exposed animals got sick. The researchers also ran experiments where they varied the humidity in the room but kept the temperature constant: the drier the air, they found, the more animals got sick. Palese s study showed that the influenza virus does spread more effectively in cold, dry air.

What does Paragraph 3 mainly discuss？

A．The direction for future research.

B．The necessity of running more tests.

C．The difficulty of testing the theories.

D．The cost of animal experiments.

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