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【多选题】
与磺胺药抗菌作用机制有关的描述正确的是（ ）。A.
结构与PABA相似
B.
与PABA竞争二氢叶酸合成酶，干扰叶酸代谢
C.
与PABA竞争二氢叶酸还原酶，干扰叶酸代谢
D.
不影响人与哺乳动物叶酸的合成
E.
抑制核酸代谢而起到杀菌作用
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【单选题】If you gain any more weight, you won't be able to ______ your clothes.
A.
break into
B.
burst into
C.
fit into
D.
look into
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