最新提问
我的动态
登录后查看动态
题目内容
A decisive way to test planet formation hypotheses is to study planetesimals, but these objects are quite ___________, neither numerous nor large enough to emit significant radiation that can be captured by telescopes.
- Aunpredictable
- Binconspicuous
- Cclustered
- Dradioactive
- Ediscreet
- Ferratic
B,E显示答案
以上解析由 考满分老师提供。