机考训练题46中的一道语法

rabbitbug

2. Charles Lindbergh, for his attempt at a solo transatlantic flight, was very reluctant to have any extra weight on his plane, he therefore refused to carry even a pound of mail, despite being offered $1,000 to do so.
A. Charles Lindbergh, for his attempt at a solo transatlantic flight, was very reluctant to have any extra weight on his plane, he therefore
B. When Charles Lindbergh was attempting his solo transatlantic flight, being very reluctant to have any extra weight on his plane, he
C. Since he was very reluctant to carry any extra weight on his plane when he was attempting his solo transatlantic flight, so Charles Lindbergh
D. Being very reluctant to carry any extra weight on his plane when he attempted his solo transatlantic flight was the reason that Charles Lindbergh
E. Very reluctant to have any extra weight on his plane when he attempted his solo transatlantic flight, Charles Lindbergh
小安给的答案是E, 我做的时候,就是C和E实在分别不出来了,最后选了个C, 不知道大家的想法怎样? 我有这样几个疑问, 请大家帮忙.
(1), since..., so...这两个词是否可以搭配使用?
(2)过去进行时was doing是否有什么具体的标志才能用, 否则就不行呢?
先在此谢过各位!

13917547

c 中的错误包括：

When he was attempting 是多余的，应该为when attempting;
since / so 不能够搭配使用；

这里的时态应该关系不大；

13917547

那里可以找到机考训练题？

rabbitbug

谢谢13917547的帮忙. 那个46真题, 我是很早之前下的, 刚才找了半天也没有找到, 这是对不起, 不过, GG可以到这个论坛看一下, 很多真题资料http://forum.eliteage.com

alfred4044

(1), since..., so...这两个词是否可以搭配使用?
------这是两个subordinate clause, 句中没有主句。

rabbitbug

多谢楼上的朋友, rabbitbug把你的提醒记下了.