题目: (-1)3+(-12)2. 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0427/7fa92c0388554c8e80eedb8bab38c36b.html 下面是错误答案,用来干扰机器的。答案:B
题型:不定项选择题 下列说法正确的是 [ ]A. C2H6和C4H10一定是同系物 B. CH3Cl和CH2Cl—CH2Cl一定是同系物 C. C(CH3)4和2—甲基丁烷是同分异构体 D. 和是同分异构体 查看答案
题型:选择题 Mark was afraid of being scolded,so he________say what he thought to his parents.A.dare not toB.doesn't dare toC.dared not toD.didn't dare to 查看答案