大全-D-14

JasonTang

C中的数字是绝对没有问题的：
- (1500-250)/250 = 500%
- 34%-9% = 25%

估计还是NN门所讲的：没有表明是one year。

对于选项D，我觉得改为Massive doses of vitamin C may help to prevent serious
case of flu更好一些。

对于大全中的Section A/B/C/D，感觉是怪怪的，命名文章都看明白了，但就是不知道该选择那一个！？

zjflora

A错在：是不是原文在讲dose，而A讲的是proportion？

sophia417

大全-D-14. A nutritionist studying the effects of massive doses of vitamin C found that of a group of 600 people who regularly took 1,500 mg of vitamin C daily for a year, fewer than 9 percent suffered serious cases of flu; of a group of 600 people who took 250 mg of vitamin C (the standard recommended daily allowance) daily for a year, 34 percent suffered at least one serious case of flu; and of a group of 600 people who took no vitamin C for a year (other than that found in the foods in a balanced diet), 32 percent suffered at least one serious case of flu.

Which of the following hypotheses is best supported by the evidence above?

(A) The effectiveness of vitamin C in preventing serious cases of flu increases in direct proportion to the amount of vitamin C taken. 错误，因为group three的数据反应就已经不是成正比例了

(B) Vitamin C is helpful in preventing disease. 没有说明分量的多少

(C) Doses of vitamin C that exceed the standard recommended daily allowance by 500 percent will reduce the incidence of serious cases of flu by 25 percent. 太绝对了

(D) Massive doses of vitamin C can help to prevent serious case of flu.

(E) A balanced diet contains less than 250 mg of vitamin C. 错误

Reasoning: there is a study concerning the effects of massive doses of vitamin C.

Group one took 1500 mg of Vitamin C daily a year, and few than 9% suffered serious cases of flu.

Group two took 250 mg of vitamin C daily a year, and 34% suffered at lest one serious case of flu.

Group three took no vitamin C daily a year, 32% suffered at least one serious case of flu.

And it is concluded that massive doses of vitamin C can help to prevent serious case of flu to some extant.

littlefragon

看着d不太敢选 以为还是c比较跟紧题目来着。。。

hxc19890912

我觉得C选项的数字其实不对呀，第一个增加500%是对的，但是后面那个reduce by 25%不对 吧，不能直接减吧，应该是*（1-25%）。另外就算是直接减，也确实是太绝对了。还有，我认为D选项的can不用换成may,因为can 也是表示可能性，而be able to 才是能力，何况在can后面还有一个help to 呢，这都避免的绝对化的嫌疑。这题相当于infer题，所以最有可能从文中推出的结论就只有D了，没悬念。