西周工商业的发展高于商代，这与西周时期大规模的城邑建设有关。
参考答案：对
— My brother fell off his bike and hurt his leg.
— ______. [ ]
A.It doesn't matter
B.He may be too careless
C.He should be careful
D.Sorry to hear that
著作权人向报社投稿的，自投稿件发出之日（）内未收到报社通知决定刊登的，可以将同一作品向其他报社投稿。
A.10
B.15
C.20
D.30
