单项选择题
肺表面活性物质的主要性质和作用 A.
．是磷脂，提高肺泡表面张力 B.
．是磷脂，降低肺泡表面张力 C.
．是糖蛋白，提高肺泡表面张力 D.
．是糖蛋白，降低肺泡表面张力 E.
．是糖脂，保护肺泡上皮
肺表面活性物质的主要性质和作用 A.
．是磷脂，提高肺泡表面张力 B.
．是磷脂，降低肺泡表面张力 C.
．是糖蛋白，提高肺泡表面张力 D.
．是糖蛋白，降低肺泡表面张力 E.
．是糖脂，保护肺泡上皮
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单项选择题
But as soon as the stranger begins to intrude his ______(偏见) , his definitions, his defects, into the conversation, it is all over.
But as soon as the stranger begins to intrude his ______(偏见) , his definitions, his defects, into the conversation, it is all over.
A．part
B．partial
C．partialities
D．partially