Though the belief in the merit of dirt was long­lived，dirt has no longer been regarded as a nice neighbor ever since the 18th century.Scientifically speaking，cleaning away dirt is good to health.Clean water supply and hand washing are practical means of preventing disease.Yet，it seems that standards of cleanliness have moved beyond science since World War Ⅱ.Advertisements repeatedly sell the idea：clothes need to be whiter than white，cloths ever softer，surfaces to shine.Has the hate for dirt，however，gone too far?

　　Attitudes to dirt still differ hugely nowadays.Many first­time parents nervously try to warn their children off touching dirt，which might be responsible for the spread of disease.On the contrary，Mary Ruebush，an American immunologist(免疫学家)，encourages children to play in the dirt to build up a strong immune system.And the latter position is gaining some ground.

　　67.What is the author’s purpose in writing the passage?

　　A.To stress the role of dirt.

　　B.To introduce the history of dirt.

　　C.To call attention to the danger of dirt.

　　D.To present the change of views on dirt.

　　解析　观点态度题。全文向我们呈现了不同时期人们对灰尘的不同观点。

　　2.(2011·福建卷·E)The Internet will open up new vistas (前景)，create the global village—you can make new friends all around the world.That，at least，is what it promised us.The difficulty is that it did not take the human mind into account.The reality is that we cannot keep relationship with more than a limited number of people.No matter how hard the Internet tries to put you in communication，its best efforts will be defeated by your mind.

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