---Oh, my God! Daring, what’s wrong with your face? ---Forget it! I am allergic to the cream recommended by my colleague, Ms. Fan, a very well preserved woman. ---Oh, no! I have to say
小芳女士很幸运地怀上了异卵双胞胎，但是，医生却告知她们夫妇均属于半乳糖血症（人类的一种单基因隐性遗传病）的基因携带者。请你帮助预测，
下列离子方程式正确的是 A．向Ba（OH）2溶液中逐滴加入NH4HSO4溶液至刚好沉淀完全: Ba2++OH-+H++SO42-=BaSO4↓+H2O B．用石墨作电极电解饱和食盐
19世纪后期，英国有钱人以坐船游览伦敦的泰晤士河为时尚，但是这一时期河水已经浑浊不堪，臭气熏天。由此可见 A. 工业城市日益喧嚣和拥挤
George returned after the war, only ________ that his wife had left him. A. to be told B. telling C. being told D. told
下列事例中，不属于利用做功改变物体内能的是：A. 冬天手冷的时候，两手互相搓搓就暖和了； B. 冬天用热水袋取暖；C. 从滑梯上滑下时，臀
, 
，且
为纯虚数，则实数
的值为 ．
