GWD17-Q32

haileywang

为什么选A?

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.    a reasonably clear picture has emerged of the patterns and causes of ocean currents
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.    there had emerged a reasonably clear picture of the patterns of ocean currents and their causes

augest

A还原一下就清楚多了。-> a reasonably clear picture of the patterns and causes of ocean currents has emerged

Nickyl90

LZ..自问自答?
a reasonably clear picture of the patterns and causes of ocean currents has emerged
不能是这两个并列吗

parispings

totally agree... "parallel"

静若水

那主语不是a reasonably clear picture of the patterns and causes of ocean currents 吗， 谓语为什么用has

卮言浅夏

那主语不是a reasonably clear picture of the patterns and causes of ocean currents 吗， 谓语为什么用h ...
静若水 发表于 2010-12-3 06:47

    a reasonably clear picture of 【the patterns and causes of ocean currents】

swlfxer

同意楼上，causes作名字用的，the patterns and causes of ocean currents, 洋流的规律与成因