题目

检验集气瓶中的CO2是否集满的正确方法是（   ） A.将燃着的木条放在瓶口         B.向瓶内倒入澄清石灰水 C.在瓶口闻其气味               D.将带火星的木条插入瓶里 答案：A—The dress looks nice . Is it silk?—Yes. Besides, it’s hand.A. made of, made in B. made of, made byC. made for , made in D. made for , made by