Cancer researchers urged people on Wednesday to take more vitamin D to lower risk of cancer， saying studies showed a clear link. "Our suggestion is for people to increase their intake， through diet or a vitamin supplement，" Dr. Cedric Garland said in a telephone interview.
Garland's research team reviewed 63 studies， including several large long-term ones， on the relationship between vitamin D and certain types of cancer worldwide between 1966 and 2004. "There's nothing that has this ability to prevent cancer，" he said， urging governments and public health officials to do more to fortify foods with vitamin D.Garland is part of a University of California at San Diego Moores Cancer Center team that published its findings this week online in the American Journal of Public Health. Vitamin D is found in milk， as well as in some fortified orange juice， yogurt and cheeses， usually at around 100 international units （IU） a serving. People might want to consider a vitamin supplement to raise their intake to 1000 IUs per day， Garland said， adding that it was well within the safety guidelines established by the National Academy of Sciences.
The authors said that taking more vitamin D could be especially important for people living in northern areas， which receive less vitamin D from sunshine.
African Americans， who don't produce as much of the vitamin because of their skin colour， could also benefit significantly from a higher intake， the authors said.
小题1: According to the passage， people are advised to take more Vitamin D because_________.
A．it is nutritious
B．it can‘t harm people’s health
C．it is not taken enough every day
D．it can lower cancer risk小题2: Which of the following can not help people get more Vitamin D？
A．Have more meat
B．Have some sunshine
C．Have a vitamin supplement
D．Have more fortified cheese小题3:Who can Garland probably be？
A．A scientist
B．A health researcher
C．A doctor
D．A public health official小题4:Which of the following food can lower people‘s chance of getting cancer？
A．Fortified orange juice
B．Milk
C．Fortified yogurt
D．All of the above小题5:People from which area should take more Vitamin D according to the passage？
A．Asian people
B．American people
C．European people
D．African people
小题1:D
小题2:A
小题3:B
小题4:D
小题5:D
题目分析：文章介绍了研究表明维他命D可以降低患癌症的几率，并且告诉了读者几种获取维生素D的方法。
小题1:细节题。根据文章中专家所说的话take more vitamin D to lower risk of cancer，可得知多吃维他命D可以降低患癌症的几率应该选择，选D
小题2:细节题。在文章中寻找有关于维他命D的食物来源，Vitamin D is found in milk, as well as in some fortified orange juice, yogurt and cheeses，并没有提到肉，所以选A
小题3:推理题：文章的第一句话Cancer researchers urged people on Wednesday to take more vitamin D to lower risk of cancer可知这是研究人员的花，第一段的最后一句话Dr. Cedric Garland said in a telephone interview.可以推断出： Dr. Cedric Garland是一个健康研究人员。选B
小题4:细节题。维他命D可以降低癌症几率，所以我们要找到可以获取维他命D的来源Vitamin D is found in milk, as well as in some fortified orange juice, yogurt and cheeses,D项包含了这些食物。所以选D
小题5:推理题：从最后一段的句子：“African Americans, who don't produce as much of the vitamin because of their skin colour, could also benefit significantly from a higher intake,” the authors said.可以推断出非洲人应该多摄入维生素D。选D