霍夫曼系数是工业净产值与农业净产值的比值。()
参考答案：错误

A. The technician will come at any moment.
B. The technician wilt arrive in an hour.
C. No one knows when the technician will arrive.
D. The man thought the technician wouldn"t come.

A. Take a walk in the rain.
B. Delay their outing.
C. Go on a picnic this afternoon.
D. Find out the weather forecast.