What do the astronomers in Holland believe? What phenomenon cannot the astronomers find a satisfactory explanation for?

admin2009-06-24  44

问题 What do the astronomers in Holland believe?
What phenomenon cannot the astronomers find a satisfactory explanation for?

选项 A、The supernova destroyed its hydrogen layers at an earlier stage.
B、The supernova debris contained much hydrogen.
C、The supernova resulted in a quark star.
D、The explosion of the supernova has produced very much antimatter.

答案B

解析
转载请注明原文地址:https://jikaoti.com/ti/UcSsFFFM
0

最新回复(0)