---Do you like the new pen?
---Yes, it_____ smoothly.
A. is written B. is writing C. writes D. wrote
Just as the world’s most respected scientific bodies have confirmed that the world is getting hotter, they have also stated that there is strong evidence that humans are driving the warming. Countless recent reports from the world’s leading scientific bodies have said the same thing. For example, a 2010 summary of climate science by the Royal Society stated that: “There is strong evidence that the warming of the Earth over the last half-century has been caused largely by human activity.”
The idea that humans could change the planet’s climate may be counter-intuitive(与直觉不符的), but the basic science is well understood. Each year, human activity causes billions of tons of greenhouse gases to be released（释放）into the atmosphere. As scientists have known for years, these gases hold heat that would otherwise escape to space, wrapping the planet in an invisible blanket.
Of course, the planet’s climate has always been changing thanks to “natural” factors(因素) such as changes in solar or volcanic（火山的）activity, or cycles relating the Earth’s going around the sun. According to the scientific literature, however, the warming recorded to date matches the pattern of warming we would expect from a build-up of greenhouse gas in the atmosphere – not the warming we would expect from other possible causes.
Even if scientists did discover another reasonable explanation for the warming observed so far, that would beg a difficult question. As Robert Henson puts it in The Rough Guide to Climate Change: “If some newly discovered factor can account for the climate change, then why aren’t carbon dioxide（二氧化碳）and the other greenhouse gases producing the warming that basic physics tells us they should be?”
The only way to prove with 100% certainty that humans are responsible for global warming would be to run an experiment with two identical Earths – one with human influence and one without. That obviously isn’t possible, and so most scientists are careful not to state human influence as an absolute certainty.
In most scientists’ opinion, the global warming is mainly caused by ________.
A. solar activity
B. volcanic activity
C. the Earth’s going around the sun
D. human activity
The text is developed by ________.
A. giving typical examples
B. following the order of space
C. analyzing a theory and arguing it
D. comparing and finding differences
The underline word “identical” means ________.
A. totally different
B. exactly the same
C. extremely important
D. relatively independent
Which of the following can be the best title?
A. Are All the Scientists Really Scientific?
B. Where Is Global Warming Leading Us to?
C. Are Humans Definitely Causing Global Warming?
D. What’s Relation of Global Warming and Greenhouse Gases?
In Sydney, there’s only ________ average of 23 days a year when ________ sun doesn’t shine.
A. the, the B. an, / C. an, the D. the, /
It was ______ creative thinking that I took the course, not to get high marks in exams.
A. developing B. to develop C. developed D. to have developed
Although this ________ sound like a simple task, great care is needed.
A. must B. shall C. may D. should
A sudden change in temperature _______ to bring rain or snow.
A. gets B. turns C. hopes D. tends
In the United States, 30 percent of the people have a “weight problem”。To many people the cause is obvious (明显的): they eat too much. But scientific evidence (证据) does little to support this idea. Going back to America of 1910, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less, and didn’t watch television.
Several modern studies, moreover, have shown that fatter people don’t eat more on average than thinner people. A 1979 study of 3,545 London office workers showed that fat people eat less than slim (苗条的) people.
Studies also show that slim people are more active than fat people. A study by a research group at Stanford University found the following interesting facts:
The more the man ran, the greater loss of the body fat
The more they ran, the greater increase in food intake.
Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.
Nowadays many Americans have the problem that ______.
A. they are too slim B. they work too hard C. they are too fat D. they lose too much body fat
According to the passage, how many people in 900 Americans have a “weight problem”?
A. 150. B. 300. C. 600. D. 270.
Is there any scientific evidence to support the idea that eating too much is the cause of a “weight problem”?
A. Yes, there is plenty of evidence. B. Of course, there is some evidence to support this.
C. There is hardly any scientific evidence to support this. D. We are not sure.
The Americans in 1910 ________. A. ate more food and had more physical activities
B. ate less food but had more physical activities
C. ate less food and had less physical activities D. had more problems
短文改错 (共10小题; 每小题1.5分, 满分15分) 此题要求改正所给短文中的错误. 对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个勾(√); 如有错误(每行只有一个错误),则按下列情况改正:
此行多一个词: 把多余的词用斜线(\)划掉, 在该行右边横线上写出该词, 并也用斜线划掉.
此行缺一个词: 在缺词处加一个漏字符号(^), 在该行右边横线上写该加的词.
此行错一个词: 在错的词下划一横线, 在该行右边横线上写出改正后的词.
注意: 原行没有错的不要改.
Behind my apartment, there is used to be a dirty and
______________
messy corner. Bits of plastic bags hanged on the trees.
Broken bottles were left laying here and there. There was
a damaging car in the center. The whole corner gave off an
unpleasant smell. One year ago, we decided to turn it in a
beautiful park. since then, great changes have been taken place
in that corner. All the rubbish have been cleared away. Flowers
and young trees have planted all over. Now birds come
here to sing, children come here to play, and adults come here
to enjoy our peaceful life. It has taken on a new look.
His suggestion ____ the meeting be delayed was turned down.
A. which B. that C. / D. it
It is exactly the way ________ we speak ________ makes our teacher angry.
A. which; that B. what; which C. that; which D. that; that