天山20。NO14

14.         A discussion of our nation’s foreign policy must begin with the fact of there being an independent Western Europe which 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（D）

(E) To begin discussing our nation’s foreign policy thee must be an acknowledgment of the fact that

不明白为啥选D，C错在哪啦？