(每题4分)解下列方程: (1) (2)(3) 用配方法解方程: (4)(5) (6)
A group of frogs were traveling through the woods, and two of them fell into a deep pit. All the other frogs 36 the pit. When they saw how 37 the pit was, they told the two frogs that they mig
If he refuses to _____ my plan, I can probably find someone more cooperative. A. put up with B. fall in withC. do away with D. get along with
在2A+B═2C反应中,已知A的相对分子质量是28,C的相对分子质量是44,则B的相对分子质量是( ) A.16g B.16 C.32g D.32
在正四面体ABCD中,M、N分别是棱BD、CD的中点,则平面ABC与平面AMN所成锐二面角的大小为__________.
补全对话。A. Ofcourse. B. It’s frommy new pen pal, Tom. C. Which oneis Tom? D. He isfrom Australia. E. Can youtell me something about him? F. No,thanks. G. It is aletter. 从方框中选择
一列火车从上海开往北京,下列叙述中,__________指的是时刻,__________指的是时间. A.6时10分,列车从上海站出发 B.列车一共运行了12
下列属于精神文明创建活动的是 A.开展全国道德模范评选表彰活动 B.举办“煤博会”等重大经济洽谈活动 C.实施城市污水综合