过滤时正确操作为( )A.将待过滤的物质搅拌后沿着玻璃棒倒入过滤器中B.将待过滤的物质静置后沿着玻璃棒先倒上层清液,再将沉淀倒入过滤器中C.
下列历史名人与历史典故搭配正确的是 A.晋文公——卧薪尝胆 B.勾践——纸上谈兵 C.楚庄王—
阅读下列关于中日关系的材料,回答问题。 材料一 2014年是中国新的甲午年,人民日报发表社论:满怀中国梦迎接甲午年,历史之痛不能重演。 (1)
我国共分为四个干湿地区,其中半干旱地区与半湿润地区的分界线是______等降水量线( ) A.400mm B.800mm C.200mm D.50mm
The woman is ______ fat because he eats ______ junk food. A. much too, too much B. much too, much too C. too much, too much
下列溶液蒸干并灼烧,最后得到固体是溶质本身的是 A.CuSO4 B.NaHCO3 C.KMnO4 D.FeCl3
----A number of students _______ in the dining hall. ----Let me count. The number of students ________ about 200 A. is; is B. is; are C. are; is