问：补充250中147

147. Not since Galileo suffered the “scurvy humor” of the Inquisition has a religious organization so effectively curbed the ability of a major scientist that he could pursue a theory.

(A) has a religious organization so effectively curbed the ability of a major scientist that he could pursue

(B) did a religious organization so effectively curb the ability of a major scientist that he could pursue

(C) has a religious organization so effectively curbed the ability of a major scientist to pursue

(D) did a religious organization so effectively curb the ability of a major scientist to pursue


(E) has a religious organization so effectively curbed whether a major scientist had the ability that he could be pursuing


我选了A，其实，我不懂最后的pursue是谁发出的动作，给出答案后，我还是读不懂，笨啊~请教