单项选择题

These programmes are of immense value to old people（）

A．natural
B．fatal
C．tiny
D．enormous

<上一题目录下一题>

热门试题

单项选择题

Many scientists have been probing psychological problems．（）

A．solving
B．exploring
C．settling
D．handling

单项选择题

A great deal has been done to remedy the situation．（）

A．maintain
B．improve
C．assess
D．protect

相关试题