题目内容
(请给出正确答案)
[主观题]
What does the passage mainly discuss?A.The production of solar light and heat.B.The physic
What does the passage mainly discuss?
A.The production of solar light and heat.
B.The physical and chemical nature of life.
C.The conversion of Hydrogen to helium.
D.Radiation in the X - ray part of the spectrum.
提问人:网友wma1102
发布时间:2022-01-07