下列疾病中,可能由空气污染引起的是 [ ]
A.哮喘
B.感冒
C.肝炎
D.沙眼
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. __ many times, but he still wouldn't listen.
A.Having told
B.Having been told
C.He having been told
D.He was told
Praise is like sunlight to the human spirit; without _____we cannot flower and grow.
A. it
B.them
C.that
D.which
病人喘而胸满闷窒,甚则胸盈仰息,咳嗽多粘腻色白,咯吐不利,兼有呕恶,纳呆,口粘不渴,苔厚腻,脉滑。此属
A.痰热遏肺型喘证
B.风寒闭肺型喘证
C.痰浊阻肺型喘证
D.痰浊壅肺型咳嗽
E.寒哮
在减数分裂中,染色体减半在______就已经实现了。
储存乙炔的容器直径越小,则发生爆炸的可能性越()
A.越大
B.越小
C.无规律