In the past decades, sea ice ______ in the Arctic as a result of global warming.

A．had meltedB．has been meltingC．meltedD．is melting

B

解析試題分析：考察時(shí)態(tài)。本題的關(guān)鍵是前面的時(shí)間狀語In the past decades。只要出現(xiàn)“in the past/last+一段時(shí)間”，都要和現(xiàn)在完成時(shí)連用。句意：在過去的幾十年里，由于全球變暖，北極的海冰一直都在融化。B項(xiàng)的現(xiàn)在完成進(jìn)行時(shí)表示從過去開始一直延續(xù)到現(xiàn)在的情況。這一情況符合題意。
考點(diǎn)：考察時(shí)態(tài)
點(diǎn)評(píng)：英語中的時(shí)態(tài)主要由動(dòng)詞的形式?jīng)Q定，因此在學(xué)習(xí)英語時(shí)態(tài)時(shí)，要注意分析動(dòng)詞形式及具體語境，想象在那個(gè)特定的時(shí)間動(dòng)作所發(fā)生的背景，這個(gè)動(dòng)作是經(jīng)常性動(dòng)作、一般性動(dòng)作、進(jìn)行性動(dòng)作、完成性動(dòng)作還是將要發(fā)生的動(dòng)作。

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科目：高中英語 來源： 題型：閱讀理解

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       A．f-c-e-a-b-d       B．b-e-a-f-c-d       C．f-d-e-c-b-a       D．b-f-c-d-e-a

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科目：高中英語 來源：2011屆甘肅省蘭州一中高三上學(xué)期期中考試英語卷 題型：閱讀理解

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Reduced prices for low season.
The Snowdonia Center
The Snowdonia Center for young mountain climbers has a mountain 1068.The beginners’ costs are ￡57 for a week, including food and rooms. Equipment is included except walking shoes, which can be hired at a low cost.
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Our World Sea Trip of 2008 will be unlike any holiday you have ever been on before. Instead of one hotel after another, with all its packing and unpacking waiting and traveling, you just go to bed in one country and wake up in another.
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During the trip, you can rest on deck(甲板), enjoy yourself in the games rooms and in the evening dance to our musical team and watch our wonderful play.
You will visit all the places most people only dream about – from Acapulco and Hawaii to Tokyo and Hong Kong.
For a few thousand pounds, all you’ve ever hoped for can be yours.
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A．Choose the holiday in Devon.
B．Go to the Snowdonia Centre
C．Join the World Sea Trip of 2008
D．Visit Acapulco and Hawaii
【小題2】In what way is the Snowdonia Centre different from the other two holidays?
A．It provides chances of family gatherings.
B．It provides customers with good food.
C．It offers a sport lesson.
D．It offers comfortable room.
【小題3】What is special about the World Sea Trip of 2008?
A．You can have free meals on deck every day.
B．You can sleep on a ship and tour many places.
C．You will have chances to watch and act in a play.
D．You have to do your own packing and unpacking.
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b. He studied at St. Paul Academy.
c. He published his first novel This Side of Paradise.
d. The Great Gatsby won high praise.
e. He failed to reorder his life.
f. He joined the army and met Zelda.
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B．was well educated and well off before he served in the army
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C．Fitzgerald’s friendship with Graham
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