职称英语考试

【单选题】FoodAndCancerMedical experts have suspected for many years that there is a strong link between what a person eats and cancer._________(46).
A、team ofChinese andAmerican scientists did the study. They are fromAmerican NationalCancer Institute and theCancer Institute of theChineseAcademy of Medical Sciences inBeijing. The Journal of the NationalCancer Institute published the results of the study.About thirty thousand people between the ages of 40 to 69 took part in the study. They were from the northern centralChinese area of Linxian. Most of them took vitamins and minerals every day for five years._________(47). Researchers believe that fungus and molds in local foods may be partly responsible for the high cancer rate. Researchers divided those into eight groups. Seven of the groups received different mixtures of vitamins and minerals daily. The amounts of the vitamins and minerals were 1 to 2 times greater than whatAmerican health officials say is needeD、_________(48). Those who seemed to gain the most received a mixture of a form of vitamin
A、called β-carotene, vitaminE、and the mineral selenium. The vitamin and mineral are believed to prevent damage to cells caused by cancer-causing substances. Researchers reported a 13 percent drop in cancer rates in those who took β-carotene, vitaminE、and selenium. They also found a 10 percent drop in the number of deaths caused by strokes from bursting blood vessels._________(49 ). They note that the people in Linxian eat foods that lack necessary vitamins and minerals.Chinese officials will continue to record the health records of the people in Linxian for many years. For now officials reportedly are considering using the results of the study._________(50).
A、The eighth group received sugar pills that had no effect.B、Fungus and molds in local food may be partly responsible for the high cancer rate in Linxian.C、Linxian was chosen because the people there have an extremely high rate of cancer of stomach and esophagus(食道).D、Scientists warn drat it is too soon to know if the effect would be the same among people in other counties.E、They say a new study provide the first evidence that vitamins could reduce a person’’s chance of developing cancer.F. They want to find a way to improve the health of people in Linxian and other small towns inChin
A、
网考网参考答案：E
网考网解析：
在第一段后出现“Most of them took vitamins and minerals every day for five years．”，那么前文应与之呼应，调查的内容应与vitamins有关，从而引出vitamins和cancer的联系，故选E，“维他命可以减少患癌几率”。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>