閲讀下面的短文，並根據短文後的要求答題（請注意問題後的字數要求）。Accordingtoaweatherexp...

問題詳情：

閲讀下面的短文，並根據短文後的要求答題（請注意問題後的字數要求）。

According to a weather expert’s prediction in 2006, the atmosphere will be 3℃ warmer in the year 2050 than it is today, if man continues to Burn fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities.

In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming.

However, most of the fuel is burnt in the northern hemisphere（半球）, where temperatures seem to be falling. Scientists conclude, therefore, that up to now natural influences on the weather have exceeded（勝過），those caused by man. The question is: Which natural cause has most effect on the weather?

One possibility is              ntists at one research station have studied the hot spots and “cold” spots on the sun. As the sun rotates（旋轉）, it presents hotter or “colder” faces to the earth, and different aspects to different parts of the earth. This appears to have a considerable effect on the distribution of the earth’s atmospheric pressure, and consequently on wind circulation. The sun is also variable over a long term: its heat output goes up and down in cycles, the latest trend being downward.

1．What is the best title of the passage?（within 10 words）

2．Please fill in the blank in the last paragraph with proper words or phrases to complete the sentence. （within 10 words）

3．Which sentence in the passage can be replaced by the following one?

So, experts believe that man’s behavior has less effect on the weather than that of the nature till now.

4．Is it significant for us whether the atmosphere will be warmer or colder? Why？

（within 30 words）

5．Translate the underlined sentence in the second paragraph into Chinese.

【回答】

1．The Causes Affecting Weather/ What Cause Global Warming/ What Contributes to Global warming.

2．The changeable behavior of the sun./ the sun’s effect on the earth/ from the sun

3．Scientists conclude, therefore, that up to now natural influences on the weather have exceeded those caused by man.

4．Yes. Because it will have a great effect on the environment on earth, which is very important for us.

5．因為南極較冷且*層較厚，所以，在過去人們主要擔心人為全球升温會影響北極。

（因為南極較冷且*層較厚，所以，在過去人為的全球升温所帶來的擔憂主要集中在北極。）

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