泻下剂不具有以下哪种作用（）
A.通导大便
B.排除胃肠积滞
C.荡涤实热
D.攻逐水饮
E.清热解毒
参考答案：E
He collected information on 1,000 people, whose IQ when they were ten years old.[ ]
A．is tested
B．has tested
C．would test
D．had been tested
经测试，某岩体的动弹性模量Ed=22GPa，动泊松比μd=0.25，该岩体的动剪变模量Gd是（）。
A．8.8GPa
B．9.8GPa
C．10.2GPa
D．10.7GPa
