不好意思，偶又来了，嘻嘻~~

新鲜

1。American productivity is declining in relation to Europe's; the energy expended per unit of production in the United States is (as much as twice that expended in West Germany.)
as much as twice that of West Germany's expenditure
up to two times of West Germany's expenditure
up to two times what West Germans expended
up to double the West German expenditure

正确答案是A，我也选的是A，感觉C，D，E的用法在语法上不太对头，可是偶底子太薄实在不知道他们具体错在哪里。

2。In her recently published study, Rubin asserts that most women do not suffer from the "empty nest syndrome", (they are, in fact, relieved when their children depart.)
they are relieved at the departure of the children, in fact

B答案为什么错误？

3。The science (of economic, which for four decades was) dominated by Keynesians, who at first stressed the government's role in stimulating the economy, but who were ultimately led away from solutions based on government intervention.
economics is one that for four decades has been
economics, for four decades, is one that was

定语从句who用的是过去时，为什么主句要用现在完成时？
for four decade是现在完成时的标志词吗？

呵呵又攒了一堆的问题。现在在拼命抱佛教，原来没感觉自己语法这么差呀，自言自语的说。

Louisa_xy

2. at the departure of the children比when their children depart啰嗦，用动词表达的最简洁清晰。
3. who 引导的定语从句中动作都是发生在过去，主句用现在完成时是因为动作一直延续至今.
of economic, which for four decades was 造成原句没有谓语动词。
economics, for four decades, is one that was  
for four decades修饰的应该是dominate

新鲜

谢谢Louisa_xyMM
偶再考虑一下

crazyday

2。我的一点意见：B中in fact的位置不好；the children没有 their children好。

cocool

同意,the children不知指的谁的孩子!