American beekeeping operations have been hit hard by what scientists call Colony Collapse Disorder. Almost half of their worker bees have disappeared during the past season. C.C.D. has also been reported in Israel, Europe and South America. Bees fly away from the hive and never return. Sometimes they are found dead; other times they are never found. Many crops and trees depend on pollination (授粉) by bees to help them grow.
A new report says virus may be at least partly responsible for the disorder in honey bee colonies in the United States. This virus is called Israeli Acute Paralysis Virus. It was first identified in Israel in 2004. Ian Lipkin at Columbia University in New York and a team reported the new findings in Science magazine. Doctor Lipkin says the virus may not be the only cause. He says it may work with other causes to produce the collapse disorder.
The team found the virus in colonies with the help of a map of honey bee genes that was published last year. They examined thirty colonies affected by the disorder. They found evidence of the virus in twenty – five of them, and in one healthy colony. The next step is further testing of healthy hives.
The researchers suggested that the United States may have imported the disorder in bees from Australia. They say the bees may carry the virus but not be affected.
The idea is that unlike many American bees, the ability of Australian bees to fight disease has not been hurt by the varroa mite. This insect attacks honey bees, which could make the disorder more likely to affect a hive. Australian bee producers reject these suspicions.
And some researchers suspect that bee production in the United States is down mainly because of the weather. Honey bees gather nectar(花蜜) from flowers and trees. The sweet liquid gives them food and material to make honey. But cold weather this spring in the Midwest reduced the flow of nectar in many flowers. Many bees may have starved. Dry weather in areas of the country could also be playing a part.
Wayne Esaias is a NASA space agency scientist who keeps bees in his free time. He lives in central Maryland, where he has found that flowers are blooming a month earlier than they did in 1970, which may be partly responsible for the disorder. Wayne Esaias is organizing a group of beekeepers to document nectar flow around the country.
小題1: What is the author’s attitude to the causes of the bee disorder?
A.criticalB.neutral
C.supportiveD.negative
小題2: What is the passage mainly about?
A.American beekeeping industry has been strongly influenced by the bee disorder.
B.Studies are being carried out on the causes of the bee disorder, but questions remain.
C.How the causes of the bee disorder in U.S have been found.
D.The bee production in U.S is down.
小題3: How many possibilities may be involved in the bee disorder according to the passage?
A.ThreeB.FourC.FiveD.Six
小題4:We can infer that         from the passage.
A.Israeli acute paralysis virus should be responsible for the disorder.
B.The solution to the disorder will be found eventually.
C.American bees are more likely to defend themselves against hurt from other insects than Australian ones.
D.Many crop and plant production in U.S may be influenced by the bee disorder.
小題1:B小題1:B小題1:A小題1:D
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科目:高中英語(yǔ) 來(lái)源:不詳 題型:完形填空

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A.whichB.whereC.a(chǎn)sD.that
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科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

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D.If a person is too stubborn, he will feel most shameful.
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The Harvard Student—led Walking Tour
Let a student show you Harvard···on a free walking tour.
We welcome our neighbours to stop by the Harvard University Events&Information Centre,
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科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

For the person keeping a journal, whatever he experiences and wants to hold he can write down. But to get it down on paper begins another adventure. For he has to focus on what he has experienced, and to be able to say what, in fact, the experience is. What of it is new? What of it is remarkable because of associations in the memory it stirs up? It is a good or bad thing to have happened? And why, specifically? The questions multiply  (增多) themselves quickly. As one tries to find the words that best represent this discovery, the experience becomes even clearer in its shape and meaning.
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科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

Matt grows the best vegetables in the village. He grows fruit too – big, sweet apples and oranges. And what else? Well, the biggest and the prettiest flowers.
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Matt likes music. But what about the garden? Who does the work? I will tell you another true thing: the music does the work. All plants love music; and Matt knows that.
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科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

Swimming is one of those activities that can be learned early in life. Little children can learn to swim as soon as they walk. In fact, you need the same skills in walking as in swimming. However, I believe that five is the best age to learn. By five or six, a child knows fear of water, a very important thing to know. It's wise to be afraid, to recognize true danger. Young ones understand that the water can sometimes be very dangerous.
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4). Work at any activity that builds muscles.
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A.they can talk
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C.they have no fear of the water
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A.butterflyB.backstrokeC.breaststrokeD.crawl
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