A,9：D,请告诉我为什么,逐个分析为什么其他选项错了,特别是9题第2项8题第1项,8.如图所示,两个倾角相同的滑杆上分别套A、B两个圆环,两个圆环上分别用细线悬吊着两个物体C、D,当它们都沿滑

如图,请逐个分析,为什么选D? A,9：D,请告诉我为什么,逐个分析为什么其他选项错了,特别是9题第2项8题第1项,8.如图所示,两个倾角相同的滑杆上分别套A、B两个圆环,两个圆环上分别用细线悬吊着两个物体C、D,当它们都沿滑 He is working hard and wants to_____.A.become writer B.turn an writer C.turn writer D.be writer为什么选C.请逐个分析. 第四题 请逐个分析 这道题为什么选A啊 其他选项为什么正确啊 请逐个帮我分析下 英语问题.为什么选d请逐个选项分析,谢谢.He()have come here yesterday,()he?A.mustn't'did B.douldn't;has C.mustn't;haven't D.would have been able to 为什么选A请逐个选项分析,John,look at the time.()you play the piano at such a last hour?A.must B.can C.may D.need 为什么选c请逐个选项分析,She()last night,but Ididn't see her.A.can have arrived B.must arrive C.might have arrived D.may arrive 为什么选C请逐个选项分析,Listen!His family must be quarrelling,()?A.mustn't it B.isn't it C.aren't it D.needn't they 为什么选b请逐个选项分析,Tom,you()leave all your clothes on the floor like this!A.wouldn't B.mustn't C.needn't D.may not 为什么选b请逐个选项分析,At last he()finish the work ahead of time.A.could B.was able to C.could have done D.would have been able to Great changes( )place in China in the past 20 years.A.have taken B.have been taken C.took D.would take 请问选哪个?为什么?怎么判断,请逐个分析．谢谢～ 请逐个帮我分析下 逐个分析! these coats are nice,and they look like（） A ours B our C us D we这道题完全不会请帮忙逐个分析下哦 相同质量的SO2和SO3来说对相同质量的SO2和SO3来说,正确的是：A.含氧原子个数比为2：3 B.含硫元素质量比为5：4 C.含氧元素质量比为5：6 D.含氧原子个数比为1：1 请逐个分析,并说出你的理由. 请说明为什么.逐个逐个分析10.某男孩患有21三体综合征,其原因是与卵细胞融合的精子中有一对21号染色体.请分析与该精子形成有关的是（ ）.A.初级精母细胞中21号同源染色体没有分离B.次级 Lots of people were reported _______in the earthquake,but so far we haven't found out the exact number yet.A to die B to be dying C to have been dead D dead (答案选D,为什么,请逐个分析）