单选题 A long-range health study in Framingham, Massachusetts, which began in 1948 and continues to this day, involves checking those who remain alive among the same 5 200 men and women every two years and carefully determining the causes of any deaths occurring in the group. A rather astonishing conclusion that became known in 1980 was that the lightest men had the shortest life expectancy (预期寿命) while the only others for whom weight seemed to have a significant (有意义的，重要的) opposite effect on life expectancy were those who weighed more than 25% above the national average. Much the same was true of women, with those in the lightest and heaviest groups dying earliest. These results certainly threw many doubts on the validity (有效性) of the Ideal (理想的) Weights tables in use since the forties which speak in favor of weight to height ratios (比率) well be low the national average. Indeed, they suggest that if any such idea] exists, it is slightly above the average, whatever fashion may be.

单选题 The most suitable title for the passage would be______.

【正确答案】 B

【答案解析】文章主要讲，一个持续很长时间的健康调查揭示了有关寿命和体重的一个令人惊讶反常的结论(A rather astonishing conclusion)。所以选B最贴切。

单选题 The Framingham study______.

单选题 Which of the following statements is true?

A、 The same number of men and women in the study have died.
B、 More deaths have occurred in recent two-year periods than before.
C、 The study and the use of "Ideal Weights" tables began in the same period.
D、 The study was designed to make worthless the "Ideal Weights" tables.

【正确答案】 C

【答案解析】文中有一句很容易被忽略的话...the Ideal Weights tables in use since the forties which speak in favor of weight to height ratios...，其中since the fogies(从40年代起)说明Ideal Weights tables差不多和这个调查(1948)开始于同一时期。