.如图，ABCD－A1B1C1D1为正方体，下面结论错误的是（ ） A. BD∥平面CB1D1 B. AC1⊥BD C. AC1⊥平面CB1D1 D. 异面直线AD与CB1所成的角为60°
No one is sure who the dictionary ______. A. belonging to B. belongs to C. is belonged to D. is belonging to
The politician has been warned that he would be getting into great trouble______stick to his standpoint. A. were he to B. he will C. he was to D. would he
A、B、C、D都是主族元素，A、B两元素的原子分别获得两个电子形成稳定结构时，A放出的能量大于B放出的能量；C、D两元素的原子分别失去一个电子形成
谢敏同学利用电压表和电流表测量电阻R1的阻值（约9Ω），电源选用两节干电池．（1）按图甲电路，将图乙中电流表正确连入电路．（2）该同学检查电
罗斯福新政为资本主义开辟了一条新的发展道路，核心是 A.通过谈判缓解社会矛盾 B.鼓励消费发展经济 C.加大市场调节经济
如图所示为武警战士用头将四块砖顶在墙上，苦练头功的照片。假设每块砖的质量均为m，砖与墙面、砖与头的动摩擦因数均为。要使砖恰好静止不动，
（05年湖北卷）依次填入下列各句横线处的词语，最恰当的一组是 （ ） ①建设文明寝室，首先要 文明寝室的量化指标，再按
