题目内容

阅读下面短文,掌握其大意,从每题所给的A、B、C、D四个选项中,选出最佳选项。

My husband, Tom, has always been good with animals, but I was still amazed when he befriended a female grouse (松鸡).It's impossible for a grouse to have any contact (接触) with people.In fact, they're hard to spot, they usually fly off when they hear humans approaching.

This grouse came into our lives in .Tom was working out in the field when he her walking around at the edge of the field.She was unafraid and seemed to be curious about what he was doing.

Tom saw the bird several times, and she got more comfortable around him.We quickly grew .of the bird and decided to call her Mildred.

One day, as Tom was working, Mildred came within a few feet of him to watch.Tom he didn't see her and kept working to see what she would do next.

Apparently, she didn't like to be ignored.She'd run up and peck (啄) at Tom's hands, then off to see what he would do.This went on for about 20 minutes, until Mildred became tired of the .and left.

As spring went and summer came, Mildred started to more and more often. Mildred felt comfortable enough to jump up on Tom's leg and stay long enough for me to get a picture of the two of them together.This friendly grouse soon felt not just with our family, but with anybody who walked or drove by.

When hunting season opened, we put a at the end of our driveway asking not to shoot our pet grouse.My father, who lived down the road, warned people not to shoot her.In fact, hunters would stop and take pictures, because they had never seen anything like her.

1.A.though B.because C.unless D.until

2.A.spring B.summer C.autumn D.winter

3.A.got B.kept C.noticed D.imagined

4.A.naturally B.certainly C.normally D.surprisingly

5.A.shy B.awkward C.friendly D.elegant

6.A.careful B.tired C.fond D.sick

7.A.supposed B.realized C.hoped D.pretended

8.A.put B.back C.set D.take

9.A.game B.work C.place D.man

10.A.give up B.come out C.turn over D.fly by

11.A.Eventually B.Suddenly C.Constantly D.Presently

12.A.comfortable B.guilty C.anxious D.familiar

13.A.lantern B.sign C.gun D.loudspeaker

14.A.drivers B.farmers C.hunters D.tourists

15.A.just B.yet C.thus D.also

练习册系列答案
相关题目

Exercise seems to be good for the human brain,with many recent studies suggesting that regular exercise improves memory and thinking skills.But an interesting new study asks whether the apparent cognitive benefits from exercise are real or just a placebo effect — that is,if we think we will be “smarter” after exercise,do our brains respond accordingly?The answer has significant implications for any of us hoping to use exercise to keep our minds sharp throughout our lives.
While many studies suggest that exercise may have cognitive benefits,recently some scientists have begun to question whether the apparently beneficial effects of exercise on thinking might be a placebo effect.So researchers at Florida State University in Tallahassee and the University of Illinois at Urbana-Champaign decided to focus on expectations,on what people anticipate that exercise will do for thinking.If people’s expectations jibe (吻合) closely with the actual benefits,then at least some of those improvements are probably a result of the placebo effect and not of exercise.
For the new study,which was published last month in PLOS One,the researchers recruited 171 people through an online survey system,they asked half of these volunteers to estimate by how much a stretching and toning regimens (拉伸运动) performed three times a week might improve various measures of thinking.The other volunteers were asked the same questions,but about a regular walking program.
In actual experiments,stretching and toning program generally have little if any impact on people’s cognitive skills.Walking,on the other hand,seems to substantially improve thinking ability.
But the survey respondents believed the opposite,estimating that the stretching and toning program would be more beneficial for the mind than walking.The estimates of benefits from walking were lower.
These data,while they do not involve any actual exercise,are good news for people who do exercise.“The results from our study suggest that the benefits of aerobic exercise are not a placebo effect,” said Cary Stothart,a graduate student in cognitive psychology at Florida State University,who led the study.
If expectations had been driving the improvements in cognition seen in studies after exercise,Mr.Stothart said,then people should have expected walking to be more beneficial for thinking than stretching.They didn’t,implying that the changes in the brain and thinking after exercise are physiologically genuine.
The findings are strong enough to suggest that exercise really does change the brain and may,in the process,improve thinking,Mr.Stothart said. That conclusion should encourage scientists to look even more closely into how,at a molecular level,exercise remodels the human brain,he said. It also should encourage the rest of us to move,since the benefits are,it seems,not imaginary,even if they are in our head.
1.Which of the following about the placebo effect is TRUE according to the passage?
A. It occurs during exercise.
B. It has cognitive benefits.
C. It is just a mental reaction.
D. It is a physiological response.
2.Why did the researchers at the two universities conduct the research?
A. To discover the placebo effect in the exercise.
B. To prove the previous studies have a big drawback.
C. To test whether exercise can really improve cognition.
D. To encourage more scientists to get involved in the research.
3.What can we know about the research Cary Stothart and his team carried out?
A. They employed 171 people to take part in the actual exercise.
B. The result of the research removed the recent doubt of some scientists.
C. The participants thought walking had a greater impact on thinking ability.
D. Their conclusion drives scientists to do research on the placebo effect.
4.What might be the best title for the passage?
A. Is it necessary for us to take exercise?
B. How should people exercise properly?
C. What makes us smarter during exercise?
D. Does exercise really make us smarter?

Australian scientists are trying to give kangaroo-style stomachs to cattle and sheep in order to cut the greenhouse gases they send out, which are thought to be responsible for global warming.

Thanks to special bacteria in their stomachs, kangaroo flatulence(肠胃气胀)contains no methane(甲烷)and scientists want to transfer that bacteria to cattle and sheep who produce large quantities of the harmful gas.

While the usual image of greenhouse gas pollution is a huge chimney pushing out carbon dioxide, animals at home contribute a surprisingly high percentage of total emissions in some countries. “Fourteen percent of emissions from all sources in Australia is from methane from cattle and sheep,” said Athol Kleve, a senior research scientist with the Queensland state government.

And if you look at another country such as New Zealand, which has got a much higher agricultural base, they're actually up around 50 percent, ” he said.

Researchers say the bacteria also make the digestive process much more efficient and could potentially save millions of dollars in feed costs for farmers. But it will take researchers at least three years to isolate (分离) the bacteria, before they can even start to develop a way of transferring it to cattle and sheep.

Another group of scientists, meanwhile, has suggested Australians should farm fewer cattle and sheep and just eat more kangaroos. People are still arguing about this, but about 20 percent of health-conscious Australians are believed to eat the national symbol already.“It's low in fat, it’s got high protein levels and it's very clean in the sense that basically it's the free-range (放养的) animal,” said Peter Amp of the University of New South Wales's institute of environmental studies.

1.Scientists try to give kangaroo-style stomachs to cattle and sheep to __________.

A. help them fight against different diseases.

B. reduce the amount of greenhouse gases.

C. get rid of the bacteria in their stomachs.

D. protect them from quantities of harmful gas.

2. The advantage of transferring the bacteria to cattle and sheep is that_____________.

A. it will take the researchers a long time.

B. cattle and sheep will eat more than usual.

C. it will help the farmers to save money.

D. the bacteria will make them grow quickly.

3. From this passage we can infer that___________.

A. scientists still don’t know how to transfer the bacteria to cattle and sheep.

B. people in Australia depend on kangaroos for food at the present time.

C. 14% of the greenhouse gases in New Zealand is from cattle and sheep.

D. nobody in Australia will be allowed to farm cattle and sheep in the future.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网