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请问这句话中的manner作何解?In a few minutes the police officer nera the notice-board made a slight sign with his right hand ,and the two policemen slowly stood up .They walked in a very careless manner towards the gate in front of the seats 明矾和过量NaOH反应成A,然后A和CO2（由孔雀石分解生成）反应生成某沉淀和溶液,沉淀加热分解成H2O和某物质B,B电解生成D和E,其中D是固体.那这个A,B,D,E是什么东西?为什么呢?对了，生成的D和CuO 石灰岩变成碳酸钙能否食用 想用化学方法来个创意表白~为爱怒悬100财富值!七夕节快到了~想给女友来个意想不到的而且有视觉震撼效果的礼物~因为我们现在是高中学生……所以不能被粑粑麻麻发现……所以不能送花啊 翻译:北猎良山,有献牛,足出背上,肖王恶之 邪师黄门是什么意思? 英语翻译要以一幅图画的形式来写,最好打乱事物的出现顺序! Liu Xiang is his favorite athlete.同义句 the male athlete has won the championship的同义句 the male athlete has won the （ ）（ ） championship和champion两个有什么区别 “Marxian two-class system”如何译?RT class A{ public A(){ System.out.println(" String a"); } }class B extends A{public B(){System.out.println("String b");}}class C extends B{public C(){System.out.println("String c");}}public class ConstructorTest{ public static void main(Stringargs[]){C 56R/2w要多大的电阻 champion和championship有什么不同? champion series 和 championship区别? 正确的用法是in the school 还是 in school? 少除黄门从官 什么意思 会不会指的是某某的后代. “女"的困惑阅读答案 athlete 的名词是什么,动词是什么 意思也要 male athlete weekend athlete是什么意思 看图填单词 看图,填单词 看图填单词, 题目是看图,填单词 33 32 看图填词语抱歉写错了是：33 22 light guide licence plate light LH sportspeople和athlete的区别作为运动员时用法上的区别，请举例说明， computer 大（ ）所愿,笑（ ）颜开