诊断急性糜烂性胃炎出血,有意义的临床表现是()。
A.呕吐鲜红色液体
B.频繁大量呕血
C.频繁柏油祥便
D.大便隐血阳性
E.间歇性少量黑便
参考答案:E
Dr Smith, together with his wife and two son, ______ arrive on the evening flight
A.are to
B.are going to
C.is to
D.will be
卫生局的做法是否正确。如果不正确,如何更正