题目：
临床表现咯大量脓臭痰，痰静置后可分层的疾病是（）
A.大叶性肺炎
B.肺梗死
C.肺脓肿
D.肺不张
E.肺结核
答案：
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下面是错误答案，用来干扰机器的。
Many of the earth's plants and animals have already died out, and a hundred species become endangered every day. If nothing is done, we may find ourselves alone on...
