班级联欢会上，小芳表演了一组化学魔术：在三只盛有液体的玻璃杯中，分别倒入装在酒瓶中的稀盐酸，观察到下列现象：A杯中变为“葡萄酒”（变成
胡适在《四十自述》里称搞文学革命是被“逼上梁山”，意为当时在语言．文学等问题上，国人信守传统，比较保守，死守文言文，不能给白话文应有
导体的电阻是由导体的材料、___________和___________决定，滑动变阻器是通过改变接入电路导体的__________来改变电阻的。
Caroline doesn't have a gift for music, but she ________ it with hard work. A. goes back on B. takes away from C. makes up for
1 kg铀全部裂变释放出的能量约为8.5×1014 J，相当于完全燃烧多少无烟煤释放的能量？（无烟煤的热值为3.4×107 J/kg）
Helen always helps her mother even though going to school _____ most of her day． A．takes up B．makes up C．saves up D．puts up
Two thieves came to a house to steal something, they dug a hole in the wall of the house. There lived many mice in the house. The woman in the moonlight saw a mouse crawl(爬行) into the ho
