《大教学论》

the children are very quiet与the children are being very quiet的区别 being起什么作用? 有人认为元素周期表位于第一主族的氢可以放在第七主族,能支持这种观点的是（）A.HF B.H3O+ C.NaH D.H2O...有人认为元素周期表位于第一主族的氢可以放在第七主族,能支持这种观点的是（）A.HF B 酸和醇的缩聚反应怎么反应的 醇羟基可以缩聚吗?酚羟基和醇羟基可以缩聚吗?中学化学中老师好像说醇羟基很难缩聚 至于酚羟基有酸性是不是可以理解成羧酸和醇羟基反应? He sat down beside Christina,feeling the warmth of the sun against his face,_____ to relax for the first time in days.A.able B.was able C.ought D.getting 请问逻辑主语与句子的主语一致为什么用独立主格结构,如The.old.man.sat.down,his.face.pale...请问逻辑主语与句子的主语一致为什么用独立主格结构,如The.old.man.sat.down,his.face.pale. He got to his office and sat down to b____ his work I live in the centre of Moacow.（改为否定句）I _ _ in the centre of Moscow. in the center of Moscow的中文 Short people often have better than tall people.的汉语意思 "People.often.said:There.is.no.short"People.often.said:There.is.no.short- cut.in.learning"帮我翻译一下谢啦! what do people in western countries do when they fall ill?They____their doctorAmake appoinments with Bgive a hard to Care strict with D save up for 苯酚能和无机含氧酸发生酯化吗 叙述两次鸦片战争后中国的抗争与探索 两次鸦片战争后中国的抗争与探索 关于中国人民在鸦片战争中反抗的评论既然注定要失败,那么中国人民反抗的意义在哪里 it was expensive to live in the city centre.这个句子成分? 一句话的理解分析The children of these couples will tend to inherit both qualities,building a genetic link over successive generations between them.这句话的后半句：building a genetic link over successive generations between The author finds out that good intentions alone are not enough when his attempt to be kind to an old man leaves them both feeling worse than before.这句话太长了. 请帮忙分析啊一句话的意思 谢谢两人相爱却不能在一起.一方对另一方说：“我爱你是一辈子的事,在你之前没爱过别人,之后也许也不会再爱了.” 这句话字面意思是什么意思 谢谢 All the students excpet Tom the meeting.A,joined B,joined in C,took part in D,taking part in 政治问题:选择的原则 "All the students expect Tom ( )the meeting?A.joined B.join in C.took part in D.taking part in? 中国首善陈光标10年来向慈善事业捐款捐物累计超过10亿,受资助的人数超过50万人.陈光标行使了对自己财产的（ ）A、占有权 B、使用权 C、收益权 D、处分权 两次鸦片战争与八国联军侵华战争在背景,目的,内容,影响和对中国的危害上有哪儿些异同? 如何给外国人写情书?用英文要用哪些句子?给男的写啊...他不是西方人只是母语不通,必须用英文.要含蓄一点的.比如说仰慕您好久了您总是能给我力量我一直都在惦记着您... 山上的泉水从哪里来的?我就是想知道山上泉水的来源!是冰雪融化的还是植被涵养的水源?还是由于山体特殊的压力体系呢?那长江发源地的水从何而来呢?若是冰雪融化的话,像泰山夏天就该没 泉水从山上流下来,那这些山上流下的水又是从哪儿来的呢?如果有什么根据就更好捏~ 为什么高山会终年积雪?如果是升高几米气温低几度的话,那南极和北极怎么解释?我的脑子转不过来弯~ Beyond 还有人知道是啥意思啊 Beyond 还有人知道是啥意思啊求大神帮助 山上的泉水喝了对身体好吗?