20.
Puritanfanatics brought to civil and military affairs a coolness of judgment andmutability of purpose that some writers have though inconsistent with theirreligious zeal, but which was in fact a natural outgrowth of it.
(A) but which wasin fact a natural outgrowth of it
(B) but which werein fact a natural outgrowth of it
(C) but which werein fact natural outgrowths of it
(D) but it was infact a natural outgrowth of them（C）
(E) which was in fact a natural outgrowth of it
答案是C。不明白,1）but后边可以这样跟which吗？2）which是指代 a coolness of judgement and mutability of purpose 吗？这个是不是也离得太远了点儿
14.
Adiscussion of our nation’s foreign policy must begin with the fact of therebeing an independent Western Europe whichnow thinks of itself in trans-nationalist terms.
(A) A discussionof our nation’s foreign policy must begin with the fact of there being
(B) Beginning anydiscussion of our nation’s foreign policy must be the fact of there being
(C) Any discussion of ournation’s foreign policy must begin with the fact that there is
(D) Any discussionof our nation’s foreign policy must begin by acknowledging the existence of（D）
(E) To begindiscussing our nation’s foreign policy thee must be an acknowledgment of thefact that
答案D。请教begin的用法,begin by跟begin with有区别吗？

我把题目修改了。

20.
Puritan fanatics brought to civil and military affairs a coolness of judgment and mutability of purpose that some writers have thought inconsistent with their religious zeal, but which was in fact a natural outgrowth of it.
(A) but which was in fact a natural outgrowth of it
(B) but which were in fact a natural outgrowth of it
(C) but which were in fact natural outgrowths of it
(D) but it was infact a natural outgrowth of them
(E) which was in fact a natural outgrowth of it
答案是C。不明白,1）but后边可以这样跟which吗？2）which是指代 a coolness of judgement and mutability of purpose 吗？这个是不是也离得太远了点儿

题目错了！正确是 but that were in fact natural outgrowths of it。这是个 restrictive clause，前面用 that 用得对。

That 是 coolness and mutability 的代词，所以后面用 were。后面的 but that 是和前面的 that some writers . . . 平行的，所以不是离 coolness and mutability 太远。

题目还是有错。写这两题的人不懂得 that 和 which 的分别！

14.
A discussion of our nation’s foreign policy must begin with the fact of there being an independent Western Europe that now thinks of itself in trans-nationalist terms.
(A) A discussion of our nation’s foreign policy must begin with the fact of there being
(B) Beginning any discussion of our nation’s foreign policy must be the fact of there being
(C) Any discussion of our nation’s foreign policy must begin with the fact that there is
(D) Any discussion of our nation’s foreign policy must begin by acknowledging the existence of
(E) To begin discussing our nation’s foreign policy thee must be an acknowledgment of the fact that
答案D。请教begin的用法,begin by跟begin with有区别吗？

A、B、C 不好是因为写得太累赘。D 用 by 是因为后面跟着的是 acknowledging，所以不能用 with。