I hated my new school at first, but I made lots of friends and now I_______ it. A.get B. take C. fit D. love
决定元素种类的是( ) A.电子数 B.中子数 C.质子数 D.相对原子质量
―I wonder if I can board the plane with this return ticket.( ) ―There ______ be no problem. Your ticket is valid until the end of this month. A. must B. shall C. should
His essay, ____many times,was brief and to the point,and therefore won the first prize in the writing competition. A.polishing up B.having polished up
某烃的结构简式为: 已知该分子中含有四面体结构的碳原子数为a,可在同一直线上的碳原子数最多为b,一定在同一平面内的碳原子数为c,则a
如图所示: 实验现象:饱和Na2CO3溶液的液面上有_____________色透明的_________液体,且能闻到____________。反应的化学方程式为:CH3COOH+CH3CH2OH____________,该
左图为人体激素作用于靶细胞的两种机理示意图,说法错误的是: A.激素B不直接进入细胞就能起作用 B.激素A可能是胰岛素等大分子类激素直接
确立总统制共和国,标志法国资产阶级共和政体最终确立的是 A.《人权宣言》 B.1791年宪法