适宜治疗热结便秘的药物是
A．火麻仁B．陈皮C．木香D．大黄E．桃仁
参考答案：D
解析：大黄能泻下攻积，清热泻火，善治热结便秘。故选D。
—Why weren’t you at the meeting?
—I ________ for a long-distance call from my aunt in America.
A．waited
B．was waiting
C．had been waiting
D．had waited
国内包裹最小尺寸长宽厚三面合计不少于30厘米，最短一面不少于（）厘米。
A.2
B.1
C.5
D.3
