hesangongse的个人空间

hesangongse： 几个化学键

一摩尔硅含几摩尔硅硅键，一摩尔二氧化硅含几摩尔硅硅键，一摩尔二氧化碳含几摩尔碳氧键？

2010-03-31 23:21 来自版块 - 

hesangongse： 数值表示

Statistics show that in the ____ months of this year housr priv=ces continued to drop inBeijing.A.five firsr B. first five ... 全文

2010-03-06 21:13 来自版块 - 

hesangongse： since then

Mr.Johnson left china for Canada in 1998,_____I have heard nothing from him.A.when B.during which C.since then D.since whe... 全文

2010-03-06 21:08 来自版块 - 

hesangongse： 问题

I't astonishing that she __ have said that sort of thing after all you have done for her. A.might B.need ... 全文

2010-03-06 21:03 来自版块 - 

hesangongse： 请教一道数列题

一直在正项数列{an}中，Sn表示前n项的和且2倍的根号下Sn=an+1,求an .怎么做呀 请教请教

2010-03-03 11:56 来自版块 - 

hesangongse： 五氧化二磷

五氧化二磷做干燥剂的适用范围，对酯进行干燥能用吗（在酯化反应过程中）

2010-02-22 22:18 来自版块 - 

hesangongse： 酚醛树脂

求助：酚醛树脂的合成方程式

2010-02-22 22:16 来自版块 - 

hesangongse： 问题3

He appears to be strong and healthy .____,he suffers from a very weak heart.A.As a result B.As a matter of fact C.In addition ... 全文

2010-02-09 17:54 来自版块 - 

hesangongse： 问题2

I'm really lucky to meet Mrs Li, who is__ my mother,when I have much difficulty improving my oral English.A.as a patient person as ... 全文

2010-02-09 17:51 来自版块 - 

hesangongse： 问题

---Excuse me ,Bob.Is this your dictionary?---No,it must be ___ .A.someon else's B.someone else C.someone's else... 全文

2010-02-09 17:46 来自版块 - 

hesangongse： 辨析2

actually和really的区别，有劳

2010-02-09 17:37 来自版块 - 

hesangongse： 冠词

What I need is___ book that contains ___ ABC of oil painting.A.a;/ B.the,/ C.a;the第二空为什么用the呢？

2010-02-09 17:34 来自版块 - 

hesangongse： 问题5

New Zealand is an islang that lies islangd that lies ___ the eastern coast of Australia.A,from B.off C.on ... 全文

2010-02-07 22:33 来自版块 - 

hesangongse： 问题4

Earth Day , a celebration of life and our planet, is a reminder___ we need to care about the world we live in.A.which B.of which ... 全文

2010-02-07 21:52 来自版块 - 

hesangongse： 问题3

1Each time we celebrate a festival it changes a little and in that way we keep our culture alive.A.Each time B.At each time C.... 全文

2010-02-07 21:41 来自版块 - 

hesangongse： 词义辨析

way ，means，way，approach的用法辨析，多谢。

2010-02-07 21:25 来自版块 - 

hesangongse： 问题2

[size=5]3.Hiking is __ and exciting , but you shouldn't forget safety.A.a great fun B.great fun ... 全文

2010-02-07 21:20 来自版块 - 

hesangongse： 问题

1One day Chunk was on a flight across the Pacific Ocean __suddenly his plane crashed.A.while B.before C.when ... 全文

2010-02-07 21:05 来自版块 -