\\x0d\\x0d\\x0d\\x0d\\x0d\\x0dUS\\x0dbeesoperationkeepinggroupshavebeenattackedseriouslybysocalledColonyCollapse\\x0dDisorder(蜂群衰竭失调).Almost1/2oftheirworkerbeeshavevanishedduringthepastseason.Thisdisorderhas
US\\x0dbees operation keeping groups have been attacked seriously by so called Colony Collapse\\x0dDisorder (蜂群衰竭失调).Almost 1/2 of their worker bees have vanished during the past season.This disorder has also been reported in Israel Europe and South\\x0dAmerica.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--- by bees to help them\\x0dgrow.
\\x0d\\x0dA\\x0dnew report says a virus may be at least partly responsible for the disorder in\\x0dhoney bee colonies in the United States.This virus is called Israeli acute paralysis\\x0dvirus.It was first found in Israel in 2004.Lan Lipkin at Columbia University in New York and a team reported\\x0dthe new findings in Science Magazine.Doctor Lipkin says\\x0dthe virus may not be the only cause.He says it may work\\x0dwith other causes to produce the collapse disorder.
\\x0d\\x0dThe\\x0dteam found the virus in colonies with the help of a map of honey bee genes that\\x0dwas 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\\x0dhealthy colony.The next step is further testing of\\x0dhealthy hives.
\\x0d\\x0dThe\\x0dresearchers suggested that the United States may have imported the disorder in\\x0dbees from Australia.They say the bees may carry the virus but not be affected.
\\x0d\\x0dThe\\x0didea is that unlike many American bees the ability of Australian bees to fight\\x0ddisease has not been hurt by the varroasis mite.This insect attacks honey bees which could\\x0dmake the disorder more likely to affect a hive.Australian\\x0dbee producers object to these suspicions.
\\x0d\\x0dAnd\\x0dsome researchers suspect that bee production in the United States is down\\x0dmainly because of the weather.Honey bees gather nectar 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\\x0dnectar in many flowers.Many bees may have starved.Dry weather in areas of the country could also be playing apart.
\\x0d\\x0dWayne\\x0dEsaias is a NASA space agency scientist who keeps bees in his free time.He lives in central\\x0dMaryland where he has found that flowers are blooming a month earlier than\\x0dthey did in 1970 which may be partly responsible for the disorder. Wayne\\x0dEsaias is organizing a group of beekeepers to document nectar flow around the\\x0dcountry.
\\x0d\\x0d1.What is the author’s attitude toward the cause of this\\x0ddisorder?
\\x0d\\x0dA. Doubtful B.\\x0dNeutral C. Supportive D.\\x0dNegative
\\x0d\\x0d2.The passage is mainly developed by \\x0d.
\\x0d\\x0dA. presenting\\x0dthe effect and analyzing its causes
\\x0d\\x0dB. making\\x0dcomparisons between two countries
\\x0d\\x0dC. providing\\x0ddata and examples
\\x0d\\x0dD. following\\x0dthe time order
\\x0d\\x0d3.How many possibilities\\x0dmay be involved in the bee disorder according to the passage?
\\x0d\\x0dA. Three B.\\x0dFour C. Five D.\\x0dSix
\\x0d\\x0d4.From the passage we can infer that \\x0d.
\\x0d\\x0dA. American bees are more\\x0dlikely to defend themselves against hurt from other insects than Australian\\x0dones
\\x0d\\x0dB. A collection of plants production in the\\x0dU.S may be influenced by the bee disorder
\\x0d\\x0dC. Israeli\\x0dacute paralysis virus should be responsible for the disorder
\\x0d\\x0dD. The\\x0dsolution to the disorder will be found eventually
\\x0d\\x0d\\x0d\\x0d\\x0d\\x0d\\x0d\\x0d\\x0d

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