根据生活常识选择
1.when water gets to ( ) degrees ,it becomes ice.
A.100 B.60 C.0
2.the rain comes from the ( ).
A.vapour B.clouds C.water
3.people often like ( )in spring.
A.diving B.fly kites C.swimming
4.there are ( )traffic lights in every country.
A.one B.two C.three