Critical Reading > Sentence Completions

Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

Numerous illnesses that were once difficult to ------- may now be diagnosed through ------- blood tests.

(A) detect . . perfunctory

(B) facilitate . . tedious

(C) administer . . pre-emptive

(D) treat . . grueling

(E) observe . . inconvenient?

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