既有肠燥便秘，又有水肿腹满者应选用的药物是
A．杏仁B．郁李仁C．火麻仁D．桃仁
参考答案：B
Look! There are many people on the beach. They are______ and happy.
A．relaxed
B．relaxing
C．relaxes
D．relax
凡是警告人们注意的设备、器件，应涂以（）色标记。
A.黄
B.红
C.白
D.兰
