选A 但是不太懂这里it只是在逻辑上毫无疑问的指代了CIA，但是OG解释中，还很肯定地阐明，logically and grammatically refers to CIA,我只是对这个ETS认为很明确的语法指代有些不解，凭什么就是修士后者不朽是前者呢？？不会造成歧义么？谢谢大家！

再一个　这里的for与enable有什么区别呢？为什么就是Ａ对呢？

222. By a vote of 9 to 0, the Supreme Court awarded the Central Intelligence Agency broad discretionary powers enabling it to withhold from the public the identities of its sources of intelligence information.

(A) enabling it to withhold from the public

(B) for it to withhold from the public

(D) that enable them to withhold from public disclosure

(E) that they can withhold public disclosure of

Choice A is best: enabling ... clearly modifies powers, it refers logically and grammatically to the Central Intelligence Agency, and to withhold from the public is concisely and idiomatically phrased. In choices B and C, the preposition for is used unidiomatically in place of the "-ing" modifier to introduce the phrase describing powers. In choices C, D, and E, withholding)... disclosure is wordy and imprecise, since it is really the identities that are to be withheld. The plural pronouns them in D and they in E do not agree with the singular Agency, and that in E mistakenly introduces a new independent clause rather than a modifying phrase for