麻醉前禁食禁水的主要目的是()
A.预防术中呕吐物误吸
B.防止术中排便
C.防止术后腹胀
D.利于术后胃肠功能恢复
E.防止术后尿潴留
参考答案:A
________of the chemical factories in their city _________pouring waste water into the river. It’s too dangerous.
A.Two fifths; are
B.Two fifths; is
C.Two fifth; are
D.Two fifth; is