大全6－13

Zeldaw

The tobacco industry is still profitable and projections are that it will remain so. In the United States this year, the total amount of tobacco sold by tobacco-farmers has increased, even though the number of adults who smoke has decreased.

Each of the following, if true, could explain the simultaneous increase in tobacco sales and decrease in the number of adults who smoke EXCEPT:

(A) During this year, the number of women who have begun to smoke is greater than the number of men who have quit smoking.

(B) The number of teen-age children who have begun to smoke this year is greater than the number of adults who have quit smoking during the same period.

(C) During this year, the number of nonsmokers who have begun to use chewing tobacco or snuff is greater than the number of people who have quit smoking.

(D) The people who have continued to smoke consume more tobacco per person than they did in the past.（A）

               (E) More of the cigarettes made in the United States this year were exported to other countries than was the case last year

答案没错吗？怎么看都是B

julianfl

Paradox:  tobacco sales increase  &  adult smokers decrease

if the number of teenage children who have begun to smoke greater than the number of the adult quit, it indicates that the total number of smokers increases, then resolve the paradox.

这应该是部分与总体的问题。部分减少，不意味着整体减少：）

 

[此贴子已经被作者于2007-3-25 14:55:25编辑过]

Zeldaw

but,大全给的答案是A，我觉得是B

gonghao

why do you think the answer is B?

Explain it in your way,please 

Zeldaw

A中不能说明虽然adult少了，但total number of smokers没有减少

B中用teen-age children 补充了减少的adult

julianfl

呵呵  你是不是没有看见EXCEPT 呀：）

Zeldaw

..........疯了：）谢谢大家

gonghao

never mind