2. 外语
  3. Black holes are part of space. The center of a black hole is empty.

Black holes are part of space. The center of a black hole is empty.

admin2009-01-21  59
问题 Black holes are part of space.  
The center of a black hole is empty.
选项 A、Right
B、Wrong
C、Not mentioned
答案B
解析
转载请注明原文地址:https://www.kaotiyun.com/show/CjQd777K
本试题收录于： 职称英语理工类B级题库职称英语分类
0

职称英语理工类B级

职称英语

相关试题推荐
随机试题
最新回复(0)