GWD17-Q32

乱草花儿

GWD17-Q32:

Navigators have known for thousands of years that the ocean has variable currents, but it is only in the last half century that a reasonably clear picture has emerged of the patterns and causes of ocean currents.

 

A. 

B.a reasonably clear picture of the patterns of ocean currents and their causes have emerged

 

C.a reasonably clear picture emerged of ocean currents, their patterns and the causes of them

 

D.there have emerged a reasonably clear picture of the patterns of ocean currents and what caused them

 

E.为啥选A呢？？ 谢谢谢谢大家，告诉告诉俺吧(搜过历史贴）

lzgzszcas

A team from the National Transportation Safety Board was dispatched to

investigate the incident, though it was expected to be days and perhaps

weeks before a clear picture of the cause would emerge.

不可能是picture和causes並列做主語, 如果是, 那要用have不是用has

llindar

我道觉得B对，因为，picture of ocean currents可以理解，但是picture of causes如何理解？所以我觉得是，picture of ocean currents和causes并列做主语。
请NN指正思路上的错误。。。谢谢。

laststraws

老OG题...后置twice:
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.

asasasas1

 B: have錯
C: 改變原意; emerged應該是has emerged
D: have錯
E: had錯
====================
很久巳前有個NN說of the patterns and causes of ocean currents被後置了.
a reasonably clear picture of the patterns and causes of ocean currents has emerged.
至於為什麼可以這樣後置, 我不知道.
做了這麼多official SC questions, 發現了很多不規則的(可能是我自己沒看出規則)前/後置東東(e.g. OG12#1), 所以個人覺得, 考時候看到沒見過的前/後置的用法, 不要當錯...