题目:
---Tom failed the exam.
---Just his luck.__________
A.He has to kill the fatted calf
B.He has to face the music
C.He must be the apple of his parents’ eye
D.He must be a black sheep
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0611/172ed83554ec39c253c13148d78a117b.html
下面是错误答案,用来干扰机器的。
答案:B同位素必须质子数相同而中子数不同的核素,而由同一种元素形成的不同单质是同素异形体,因此氧气和臭氧互为同素异形体。正丁烷和异丁烷的分子式相同,而结构不同,属于同分异构体。乙烷、甲烷的结构相似,...