prep #2 45关于while doing的用法，以及while和at the same time语意重复？？？？

mikacncat

45. (26816-!-item-!-188;#058&003335)

A recent poll indicates that manypeople in the United States hold a combination of conservative and liberalpolitical views; i.e., they denounce big government, saying government isdoing too much and has become too powerful, while at the same time supportingmany specific government programs for health care, education, and theenvironment.

(A) they denounce big government,saying government is doing too much and has become too powerful, while at thesame time supporting

(B) they denounce biggovernment--they say that government is doing too much and has become toopowerful--but supporting at the same time

(C) they denounce big government,they say that government is doing too much and it has become too powerful,while they support at the same time

(D) while they denounce biggovernment, saying that government is doing too much and has become toopowerful, at the same time supporting

(E) while they are denouncing biggovernment--they say that government is doing too much and it has become toopowerful-- supporting at the same time

为什么at the same time和while语意不重复？？？

cocoloop

while是连词，有两个意思：1.当...的时候，即during the time that
2.表示一种对比，轻微的转折，可以翻译成“然而”“尽管”
这里的while取第二个意思，与at the same time不重复
另外，while doing是省略句，完整应为while they are supporting...需要注意的是，while是从属连词，相当于引导状语从句，因此，如果从句的谓语动词是be,从句主语又与主句主语相同，可以都省略，比如这个句子中的they are；而but是并列连词，连接地位相等的并列的分句,所以对省略的要求更严格，必须两个分句主谓语完全相同的部分才可以省略（故B项不正确）

mikacncat

thank you~~

赵小婕

解释很好~~

cappuccino202

223. (GWD-23-Q23)
After several years of rapid growth, the health care company became one of the largest health care providers in the metropolitan area, while it then proved unable to handle the increase in business, falling months behind in its payment to doctors and hospitals.
A.while it then proved unable to handle the increase in business, falling months behind in its payment to
B.while it then proved unable to handle the increase in business and fell months behind in its payment to
C.but then it proved unable to handle the increase in business, falling months behind in its paying
D.but then proving unable to handle the increase in business, falling months behind in paying  
E.but then proved unable to handle the increase in business, falling months behind in paying

A．即便表示转折对比，while也有”at the same time“的含义在里面，与then矛盾

那这个又怎么解释？