下列关于匀强电场中场强和电势差的关系,正确的说法是（ ）A.在相同距离上的两点,电势差大的其场强也必定大B.场强在数值上等于每单位距离上的
My kids and I were heading into the supermarket over the weekend . On the way ,we spotted a man holding a piece of paper that said, “ __1___ my job. Family to Feed.” At this store, a __2___ lik
如图表示以DNA为模板转录RNA的过程图解。图中4、5表示两种功能不同的酶，请据图分析回答下列问题： （1）在玉米的叶肉细胞中，能够进行该过程的细
能使水的电离平衡右移，且水溶液显碱性的离子是( ) A．H＋ B．OH－ C．Al3＋ D．HCO
单位里程的能源消耗量是评价交通运输方式优劣的重要技术指标。下列陆路交通运输方式能 源消耗对应正确的是 A、①-高速铁路 ②-公共汽车
已知函数与的图像在上不间断，由下表知函数在下列区间内一定有零点的是（ ） x－10123 f(x)－0.6773.0115.4325.9807.651 g(x)－0.5303.4514.8905.2416.892 A．(
—What did Mr. King say to you? —He _______me ______to school early tomorrow. A.tells; come B. told; to come C. is telling; to come D. told; came
将所给单词连成完整、正确的句子。（每小题2分，共10分）1. what today weather the like is ______________________________________?2.he around looked me at turned and______________
