因地球自转产生的自然现象是( )。
A:昼夜长短变化
B:昼夜交替
C:四季的划分
D:各地热量的差异
Wang Lei
How old is he?
1.
Where does he live?
2.
How far is it from his school?
3.
How does he get to school?
4.
Why did the whole school know him?
Because he got the first place in 5.