section-14-6不解~

futureflow

6. The Iroquois were primarily planters, （but supplementing） their cultivation of maize, squash, and beans with fishing and hunting.   答案是D，不知道A和E错哪了？
(A) but supplementing 怎么错？
(B) and had supplemented
(C) and even though they supplemented
(D) although they supplemented
(E) but with supplementing  怎么错？


section-18-1 1. Clark and Florence , a husband-and-wife medical team, worked steadily and efficiently through the night,（ but sipping their coffee the next morning, she noticed that he seemed disoriented.）
(A) sipping their coffee the next morning, she noticed that he seemed disoriented
(B) sipping their coffee the next morning, he seemed to be disoriented, she noticed
(C) as they sipped their coffee the next morning, she noticed that he seemed disoriented
(D) as they were sipping their coffee the next morning, he seemed, she noticed, disoriented
(E) he seemed disoriented, she noticed, sipping their coffee the next morning
答案是C，但是我感觉D不是更好么？  
在他们正在喝的时候，as they were sipping,  比as they sipped的好啊，as they sipped的很怪，都不是表过程的。。。

eshopaholic

but 是连词，应连接一个句子，当然主语可以省略。

D的意思不对。 应该是她发现，他（看上去）没有方向感了。