11.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 63studies,including several large long-term ones,on the relationship between vitamin D and certain types of cancer worldwide between 1966and 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 100international units (IU) a serving.People might want to consider a vitamin supplement to raise their intake to 1000IUs 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.
29.According to the passage,people are advised to take more Vitamin D becauseC.
A.it is nutritious
B.it can't harm people's health
C.it can lower cancer risk
D.it is not taken enough every day
30.Which of the following can not help people get more Vitamin DB?
A.Having some sunshine
B.Having more meat
C.Having more fortified cheese
D.Having a vitamin supplement
31.Who can Garland probably be?A
A.A health researcher
B.A doctor
C.A scientist
D.A public health official
32.Which of the following food can lower people's chance of getting cancerD?
A.Milk
B.Fortified orange juice
C.Fortified yogurt
D.All of the above.
分析 本文是一篇科教類閱讀,癌癥研究人員周三呼吁人們攝取更多維生素D以降低患癌癥的風險,研究顯示這有明顯的關系.本文以此展開,主要介紹了研究表明維他命D可以降低患癌癥的幾率,并且告訴了讀者幾種獲取維生素D的方法.
解答 29.答案:C.細節(jié)理解題.根據文章中專家所說的話take more vitamin D to lower risk of cancer,可得知,多吃維他命D可以降低患癌癥的幾率應該選擇,故選C.
30.答案:B.細節(jié)理解題.在文章中尋找有關于維他命D的食物來源,Vitamin D is found in milk,as well as in some fortified orange juice,yogurt and cheeses,并沒有提到肉.故選B.
31.答案:A.推理判斷題.文章的第一句話Cancer researchers urged people on Wednesday to take more vitamin D to lower risk of cancer可知,這是研究人員的花,第一段的最后一句話Dr.Cedric Garland said in a telephone interview.可以推斷出:Dr.Cedric Garland是一個健康研究人員.故選A.
32.答案:D.細節(jié)理解題.維他命D可以降低癌癥幾率,所以我們要找到可以獲取維他命D的來源Vitamin D is found in milk,as well as in some fortified orange juice,yogurt and cheeses,D項包含了這些食物.故選D.
點評 本文是一篇科教類閱讀,題目涉及多道細節(jié)理解題,推理判斷題.做題時學生應仔細閱讀原文,把握文章主要內容,聯(lián)系文章上下文內容并結合所給選項含義,從中選出正確答案,一定要做到有理有據,切忌胡亂猜測.