在水文循环中基本水文要素有()。
A.含沙
B.降水
C.蒸发
D.径流
参考答案:B, C, D
- Was it because of his laziness_______ he didn't do the experiment successfully?
- No, it was because of his carelessness.
A.that
B.while
C.for
D.as
发动机()s后未能启动,扳动燃油熄火拉杆断油。
A、5
B、10
C、15
D、20