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
作者: yaozo 时间: 2009-9-20 17:04
A还原一下就清楚多了。-> a reasonably clear picture of the patterns and causes of ocean currents has emerged作者: serendipityh 时间: 2009-9-20 18:43
还有别的问题吗? 作者: yaozo 时间: 2009-9-20 22:33
没了，老师。 我的分析对吧？ 作者: vickyye 时间: 2009-10-20 23:22
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
作者: FFcapm 时间: 2009-10-21 00:27
totally agree... "parallel" 作者: kadin5568576 时间: 2010-10-5 11:49
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作者: bowow 时间: 2010-11-1 19:18
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
-- by 会员 kadin5568576 (2010/10/5 11:49:25)
a reasonably clear picture of 【the patterns and causes of ocean currents】作者: jackiehuang 时间: 2010-11-2 10:16
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