Attention: your browser is obsolete and may be incompatible with this website. Please consider upgrading for a better experience.
理学互助公社
Anything and everything
16,
16, from China
Expert
14,
14, from United Kingdom
Expert
数学填辅助线我一点儿也不会，谁来救救我这个初二的学生
16,
16, from China
Expert
数学填辅助线我一点儿也不会，谁来救救我这个初二的学生
多熟悉一下基本图形，八字，A字等等，不过有的时候还是凭感觉哈哈哈哈哈哈
17,
17, from China
New Member
16,
16, from China
Expert
如何用乙炔和适当的有机无机试剂，合成3-甲基-3-氯-1-丁炔，要求三步反应以内
15,
15, from Antarctica
Expert
14,
14, from Greece
Regular
我高中数学超差
如果你认真思考一下，数学真的很简单又有趣！
16,
16, from China
Expert
如果你认真思考一下，数学真的很简单又有趣！
有趣赞同
但不简单哈哈哈哈哈哈
14,
14, from Greece
Regular
