上数学课时，老师讲错了一个知识点，我们应该：（   ）

A．当堂向老师指出

B．不予理睬，反正自己已经会了

C．与同桌小声交流

D．下课后向老师委婉说明

The wealth of a country should be measured________the health and happiness of its people as well as the material goods it can produce.[ ]

A. by all means  

B. in line with

C. in terms of  

D. in case of