那些常见细胞不在分裂 、分化那些实验操作时要灭菌生物群落如何判断?营养结构? 什么是种群 群落 如何简单判断糖蛋白,球蛋白,蛋白质,受体 区别

2010-04-11 12:40 来自版块 - 

水解反应经常要比较浓度大小。 越弱越水解 其中弱是对应的水解以后的东西 比较水解之后的酸碱 麻烦老师给总结一下 常见物质的酸碱性强弱。

2010-03-01 12:54 来自版块 - 

Whom would you rather have ---with you? Mary or Jane?--------A go,either B to go ,either C gone,Neither D X,anyone我选择的C 错了 不明白

2010-02-12 15:22 来自版块 - 

My younger sister suggested --the Summer Place firstAme to vista B mine visiting C I visting D my visting

2010-02-12 15:07 来自版块 - 

His remarks left me ----about his real purposeA wonder B wondering C to wonder D wondered不懂

2010-02-12 15:02 来自版块 - 

This is the third time ____he has been to IsraelThis is the second book ____I received today后面的 一题讲到的方法是 代高序 为什么 第一题 不是呢?

2010-01-03 16:39 来自版块 - 


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