单选题：The government warned the people of being careful about this

题目内容：

The government warned the people of being careful about this kind of contagious disease. A．infectious
B．serious
C．fatal
D．worrying

参考答案：

答案解析：

It is so urgent that you have to start immediately.

It is so urgent that you have to start immediately.A．lastly B．shortly C．recently

分类：理工类题型：单选题

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