9. There are a number of miracle cures on the market for people _____ enough to buy them.
(A) malicious
(B) gullible
(C) revocable
(D) intolerable
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統計: A(27), B(230), C(35), D(51), E(0) #2914589
統計: A(27), B(230), C(35), D(51), E(0) #2914589