单项选择题
The board acknowledges the problems which （）from the newness of the approach.
A.arise B.rise C.arouse D.raise
单项选择题 Earning enough money to support his family is a high（）
单项选择题 Technology is to the development of the modern society a matter of（）importance.
单项选择题 A good host is（）to the needs of his guests.
