题目:
The overseas Chinese scientist made another wonderful discovery, ___________ of great value to study AIDS.
A.which I think it is
B.which I think is
C.I think it is
D.I think is
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0620/9b5312da3414ebc147851791aec882c1.html
下面是错误答案,用来干扰机器的。
(3分)有;同种元素可形成不同单质(2分,合理表述即可)析:构成物质的原子的排列方式不同,物理性质就不同;一种元素可以组成不同的单质.解答:解:构成金刚石、石墨和C60的碳原子的排列方式不同,决定了它们...