________ has been announced, we shall have our final exams next month．


  1. A.
    That
  2. B.
    As
  3. C.
    It
  4. D.
    What
B
此題考查as代替整個(gè)主句，引導(dǎo)非限制性定語從句的用法。如果選C項(xiàng)，應(yīng)把從句改為：It has been announced that we shall have our final exams next month．如果選D項(xiàng)，此句應(yīng)為：What has been announced is that we shall have our final exams next month．選項(xiàng)A中的that不能引導(dǎo)非限制性定語從句，故應(yīng)排除。
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科目：高中英語 來源： 題型：閱讀理解

The temperature is rising again in the Arctic. The sea ice area has dropped to one of the lowest levels on record， climate scientists reported last week.

“The new Arctic Report Card tells a story of widespread and continued effects of a warming Arctic，” said Jackie Richter-Menge of the US’s Cold Regions Research and Engineering Laboratory.

“This isn’t just a climatological (氣候?qū)W的) effect. It impacts the people that live there，” she added.

Scientists concerned about global warming focus on the Arctic because that is a region where the effects are expected to be felt first， and that has been the case in recent years.

There was a slowdown in Arctic warming in 2009， but in the first half of 2010 warming was near a record pace. The monthly readings were over 4 degrees Celsius above normal in northern Canada， according to the report card. The report card was prepared by 69 researchers in eight countries.

Researchers said last winter’s big snow storms that struck some Northern countries were tied to higher Arctic temperatures.

“Normally the cold air is bottled up in the Arctic，” said Jim Overland of the US National Oceanic and Atmospheric Administration. “But last December and February， winds that normally blow west to east across the Arctic were instead bringing the colder air south，” he said.

“As we lose more sea ice... warming in the atmosphere can create more of these winter storms，” Overland said.

There is a powerful connection between ice cover and air temperatures， Richter-Menge explained. When temperatures warm， ice melts. When ice melts it shows darker surfaces underneath ， which absorb  more heat. “That， in turn， causes more melting and on the cycle goes，” she said.

In September the Arctic sea ice extent was the third smallest in the last 30 years， added Don Perovich of the US Army Laboratory. He said the three smallest ice covers have occurred in the last four years.

Scientists care so much about the warming in the Arctic region because 　　　　.

A .the climate in the Arctic doesn’t change much

B. global warming effects are most serious in the Arctic region

C .there has been a major decrease of Arctic warming in recent years

D. by studying the region they can make predictions about the future impact of global warming

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A. The surface of the sea ice in Arctic is getting darker and darker.

B. The Arctic sea ice extent has disappeared over the last 30 years.

C. The sea ice extent has increased to one of the highest levels on record.

What does the underlined word “cycle” refer to？  

A .Ice giving off heat when it melts.

B. Higher temperatures bringing more storms.

C .The cause and the result of the melting.

D. The life of the people living in the Arctic getting worse.

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A. Higher Arctic temperatures.

B. The melting ice.

C. The cold wind blowing west to east.

D. Cold air bottled up in the Arctic.

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A. Last winter’s big snow-storms.

B. Winds in the Arctic region.

C. Arctic warming and its possible effects.

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科目：高中英語 來源： 題型：閱讀理解

When most people think of tropical islands, lined with white sandy beaches and bright blue seas, it is often the Caribbean or South Pacific that comes to mind．But for Chinese tourists who want a taste of paradise on Earth there is a new place to consider.

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       B．Beautiful scenery, rich history and culture.

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       C．Location and sports.      D．Natural resources and agriculture.

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       A．Mauritius has something similar to the Caribbean or South Pacific.

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Ｍy second father

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