3.What can be inferred from Paragraph 2?

　　A.Vitamin D can prevent all kinds of cancer.

　　B.People must take in as much vitamin D as possible.

　　C.African Americans don’t produce vitamin D.

　　D.it’s unrealistic to take in enough vitamin D by drinking milk.

　　答案:D

　　解析:推理判断题。根据第二段的第四句和第五句可知,每份牛奶等的维生素D含量约为100国际单位,而人们可以考虑服用补充剂将自己的维生素D摄入量提升至每天1000国际单位。因此,通过喝牛奶并不能摄入足量的维生素D。

　　4.Who should take more Vitamin D according to the passage?

　　A.African people. B.Asian people.

　　C.American people. D.European people.

　　答案:A

　　解析:细节理解题。根据文章最后一段“African Americans,who don’t produce as much of the vitamin because of their skin colour,could also benefit significantly from a higher intake”可以推断出,非洲人应该多摄入维生素D,故选A项。

　　B

　　After a confirmed rabies(狂犬病) case in Parke County,Indiana,experts are urging caution if you find a bat(蝙蝠) in your home or office.

　　“If you try to kill a bat,you’re more likely to get bitten,”said Joy O’Keefe,assistant professor of biology and director of Indiana State University’s Center for Bat Research,Outreach and Conservation.“Most bats people find in their houses are healthy and are not going to bite them and give them rabies.”But they could be a federally(联盟地) endangered species,such as the Indiana Bat,which is found in this area.

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