具有燥湿化痰、降逆止呕功效的药物是（）
A.枳实
B.半夏
C.芦根
D.莱菔子
E.全瓜蒌
参考答案：B
What _____the forests of the USA in the past 30 years? [ ]
A. has happened to
B. is happened to
C. has happened at
D. is happening
以下数据中与实际情况基本相符的是 [ ]
A．一个大西瓜大约重10 N
B．1 kg 的鸡蛋大约能有40 个
C．一个普通初中生的体重大约在450 N 左右
D．一瓶标有“550 mL”的饮用水的质量大约为1 kg
