题目

Some doctors are criticized for _____ patients to buy too many medicines. A．advising B．demanding C．suggestingD．driving 答案：A室温时，对一定量的饱和澄清石灰水分别进行如下操作，不会产生白色固体的是A. 蒸发 B. 通入少量CO2C. 加入少量CaO D. 放入冰水中