两条异面直线指的是( ) A.在空间中不相交的两条直线 B.某平面内的直线和该平面外的直线 C.分别位于两个平面的直线 D.
The village was badly struck by the rare flood last night. The villagers were badly ___ food and shelter. A. in time of B. in charge of C. in want of D. in possession
可以用分液漏斗分离的一组液体混合物是( ) A.溴和四氯化碳 B.苯和溴苯 C.水和硝基苯 D.苯和汽油
My parents are very happy to make __________money. A. a lot B. a lot of C. many D. little
(09常州市学业水平测试)组成蛋白质、脂质和糖类的共同元素是 A.C、H、O B.C、H、O、NC.C
双曲线上到定点的距离是的点的个数是( ) A.个 B.个 C.个 D.个
全民阅读工程在某市全面启动之后,机关、学校、机场、车站等企事业单位建设千家阅读窗口,那景象真可谓“ ,
村民对村委会主任的选举属于( ) ①直接选举 ②间接选举 ③等额选举 ④差额选举 A.①③ B.①④ C.②③ D.②④