听力原文:M: I am sorry I forgot to return your history book last night. W: It doesn't matter because the test isn't until the coming Monday. Q: What does the woman imply? (19)
A.
The man hasn't caused a problem.
B.
The man should have returned the book earlier.
C.
She will probably won't do well on the coming Monday's test.
【简答题】Atomic weight and atomic mass are two important concepts in chemistry and physics. Many people use the terms interchangeably, but they don't actually mean the same thing. Take a look at the difference...