问题
单项选择题
暴雨强度的重现期指( )该暴雨强度发生一次的平均间隔时间，以P表示，以年为单位。
A．等于或大于
B．等于或小于
C．大于
D．小于
答案
参考答案：A
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暴雨强度的重现期指( )该暴雨强度发生一次的平均间隔时间，以P表示，以年为单位。
A．等于或大于
B．等于或小于
C．大于
D．小于
参考答案：A
| 完形填空。 | |||
| Today more and 1 people begin to have their own cars, So there is 2 traffic in the 3 . and 4 of the roads are too narrow, That is 5 there are so many accidents. In cities 6 over the world thousands 7 people are hurt 8 die in traffic accidents. Of course, traffic accidents also 9 outside the cities in the countryside, but there is not 10 much traffic and there are not so many accidents. | |||
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