OG11-20 提问

20      The number of people diagnosed as having a certain intestinal disease has dropped significantly in a rural county this year, as compared to last year. Health officials attribute this decrease entirely to improved sanitary conditions at water-treatment plants, which made for cleaner water this year and thus reduced the incidence of the disease.

21       

Which of the following, if true, would most seriously weaken the health officials' explanation for the lower incidence of the disease?

(A)        Many new water-treatment plants have been built in the last five years in the rural county.

(B)        Bottled spring water has not been consumed in significantly different quantities by people diagnosed as having the intestinal disease, as compared to people who did not contract the disease.

(C)       Because of a new diagnostic technique, many people who until this year would have been diagnosed as having the intestinal disease are now correctly diagnosed as suffering from intestinal ulcers.

(D)       Because of medical advances this year, far fewer people who contract the intestinal disease will develop severe cases of the disease.

E         The water in the rural county was brought up to the sanitary standards of the water in

   为什么不可以选择A呢, 5年前就有水处理系统, 但是直到今年生病的人才减少,不是说明减少和水处理没有关系嘛? 不就削弱了嘛? CD 提问???????????????????????

想知道e选项该怎么理解

E the water in the rural county was brought up to the sanitary standards of the water in neighboring counties 10 years ago.

在下有两个问题:

1. C中的Ulcer难道不是diease吗?

2. 同楼上mutegirl, E怎么理解.?我认为意思是10年前水质已经很好了.

顶!

噢.看了解释,E应该不对,E只是说水质10年前就和周围村子的水质一样了,但没有说好坏.

但是C的问题呢?怎么理解?

对于Ａ的理解－－－文中的水系统是ＩＭＰＲＯＶＥＤ，而Ａ中的只是ＮＥＷ

ＮＥＷ和ＩＭＰＲＯＶＥＤ还是有差别的．．．

[在下有两个问题:

1. C中的Ulcer难道不是diease吗?

2. 同楼上mutegirl, E怎么理解.?我认为意思是10年前水质已经很好了.]

1 "WILL" develop to Ulcer

2,"Neibouring" countries