题目内容

_____rapidly by the body, sugar provides a quick energy source.

A. Digested B. Digesting C. To digest D. Having digested

解析： 在做这道题时，不少考生误用了“表示前面的话里或上文提到过的人或事物要用定冠词”这一语法规则，将A作为正确答案。其实，这里的black one并非特指上文提到的pen。答话人表达的是“是一支黑色的钢笔吗”这一意思，故正确答案是D。

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　　阅读下列短文, 从所给的四个选项中, 选出最佳答案。

"Uncle Sam", of course, stands for the United States, which is the nickname of the country.It is hard to believe that this nickname came out quite by accident and there actually was a man called "Uncle Sam". However, few people have ever heard of such a man. The man called "Uncle Sam Willson" lived in New York and ran a meat-packing business. One day, a mayor (市长) came to his shop and noticed the EAUS in front of the houseand asked what they stood for. And a workmate added jokingly that "US" stood for "Uncle Sam Willson". In May 1813, this story appeared in a newspaper published in New York. Since "Uncle Sam" was a popular man and was an example of hard-working and patriotic (爱国的) American,the idea of Uncle Sam as a name for this kind of men caught on (流行) rapidly. By the end of the war of 1812, "Uncle Sam" had come to symbolize(象征) the character of the nation and the government and the nickname of the U.S.

1. In the U.S., the nickname of "Uncle Sam". _________.

[ ] 　　

A. was named by the government 　　

B. was raised and came into being step by step

C. was suggested by Willson and decided by the government

D. had been formed since the U.S. was set up

2. In the U.S., Uncle Sam Willson _____________.

[ ]

A. won the greatest honour 　　

B. was one of the famous bosses of the restaurants

C. was an ordinary citizen　　

D. became the wisest man　　

3. In America "Uncle Sam" becomes very famous, ___________.　　

[ ]

A. so everybody knows him　　

B. but all the people don't know him

C. so everyone likes him 　　

D. so everybody learns from him

4. Today in the U.S. many people think ___________.

[ ]

A. they are proud that they are called "Uncle Sam" 　　

B. they should do a lot of things for mankind 　　

C. they would be unhappy when they are called "Uncle Sam"

D. the name of "Uncle Sam" should be regarded as the most important thing

5. In this text, "nickname" is ____________.

[ ]

A. a name by which a man is called familiarly, other than the real name

B. one's real name

C. Uncle Sam's name　　　　

D. the name of the hard-working people

_____rapidly by the body, sugar provides a quick energy source

A.
Digested
B.
Digesting
C.
To digest
D.
Having digested

When scientists scan the global horizon, over?fishing, loss of species habitat, water shortage, climate change, and invasive species seem to be the biggest threats to the earth. Then what will our world be like in 2050?

There are two features in the growth of world population. First, the United Nations estimates that by 2050, the population of European countries will decrease from the current 0.72 billion to 0.63 billion. Second, the population in developing countries is growing rapidly. By 2050, the population of Africa is expected to reach 1.8 billion, 0.9 billion more than its present population.

Global warming will become more and more serious. A recent research report published by the United Nations indicates that it's quite possible that the Earth's temperature is rising well above the previous estimate. Such an outcome would have severe consequences. For example, a research team from the University of Colorado used satellite data to estimate that the ice sheet will lose up to 48 cubic (立方的) miles by 2050. Ice shelves in the Antarctic will have decreased by more than 7,200 square miles in the next forty years.

There will be more severe water shortage. Africa's rivers face dramatic change that will leave a quarter of the continent severely short of water by the middle of the century, according to a global warming study. Even modest decreases in rain in western Africa will see rivers lose as much as 80% of their water.

Today there are 620 million private cars worldwide. With current growth trends, that number is expected to reach three billion worldwide by 2050. If we continue to burn fossil fuels at current rates, levels of carbon dioxide in the atmosphere will reach 550 ppm (parts per million)—double pre?industrial levels—by around 2050. This will increase global temperatures by between 1.4℃ and 4.8℃ by 2050, and sea levels will rise by between 0.09 meters and 0.78 meters.

Title	What will Our World be Like in 2050？
Features of the growth of world population	●The population in Europe will decrease (76)________ 0.09 billion.
●The population in developing countries will be (77)________ as much as its present population.
Consequences of global warming	●The (78)________ of the ice sheet will reach 48 cubic miles.
●Ice shelves in the Antarctic will decrease by (79)________ 7,200 square miles in the next four (80)________．
●One (81)________ of Africa will be severely short of water.
Information (82)________ to private cars	The number of private cars will increase by (83)________ million.
(84)________ of cars	●Make levels of carbon dioxide in the atmosphere reach 550 ppm.
●Increase global temperatures by 1.4℃～4.8℃.
●(85)________ sea levels by 0.09 meters ～ 0.78 meters.

Digested rapidly by the body, ________(糖) provides a quick energy source.

_____rapidly by the body, sugar provides a quick energy source

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