A-A+
All matter is made up of atoms; _______ it is
问题详情
All matter is made up of atoms; _______, it is made up of nuclei with electrons whirling around them.
A．that is
B．on the contrary
C．in short
D．on the other hand请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：短语意义辨析。A.thatis也就是说，即；B．onthecontrary相反地；C.inshort简而言之；D．ontheotherhand另一方面，常与ononehand连用。根据题意和逻辑应选A。句意为：所有的物质都是由原子构成的，也就是说，它是由原子核和围绕着原子核旋转的电子构成的。
