单项填空 在A、B、C、D四个选项中, 选出可以填入空白处的最佳选项。 — ________ popular Jiang Nan Evening Paper is! — That’s true. It has ________ many re
如图所示,平行金属板中带电质点P原处于静止状态,不考虑电流表和电压表对电路的影响,当滑动变阻器R4的滑片向6端移动时,则 A.电压表
乙酸苯甲酯是制造香精的原料之一.其合成路线如下: (1)乙酸苯甲酯的分子式为 ,B的官能团的结构式为 . (2)CH3CH2OH→A的反应类型为 ,乙醇
根据句意,用括号中所给单词的正确形式填空,每空一词。 1.He was such a careless boy that he hurt his two _________(foot)badly just now. 2.I like listening to light mu
20世纪60年代以来,不断加强的多极化趋势对世界历史发展产生了重大影响。其中不包括( ) A.使联合国的作用得到世界各国的普遍重视
(5分)工业上以大理石和赤铁矿为主要原料可以制取B和G,其转化关系如右图所示,已知 D、G的主要成分为单质。试回答下列问题: (1)写出工业制取的
At the meeting, the people were _____by the kindness and natural beauty of his mother although there is a scar in her face. A. surprised B. excited