多少孕周前不能作出前置胎盘的诊断（）。
A.10W
B.20W
C.25W
D.30W
E.以上均不是
参考答案：D
喉炎出现（）。
A．干咳
B．嘶哑性咳嗽
C．金属音调咳嗽
D．变换体位时咳嗽
E．犬吠样咳嗽
The physician has ordered Oxtriphyllin (Choledyl SA) 0.2 g. Available tablets of the medicine are 100 mg. How many tablets should be given()
A. 0.5 tablets.
B. 2.0 tablets.
C. 2.5 tablets.
D. 5.0 tablets.
