—Could you help me with the math problem?— Your must be barking up the wrong tree.A. A ple

问题补充：

—Could you help me with the math problem?

— Your must be barking up the wrong tree.

A. A pleasure.

B. Hang on a minute.

C. What’s the point?

D. Are you kidding?

答案：

A. A pleasure.

B. Hang on a minute.

C. What’s the point?

(答案→)D. Are you kidding?

解析：句意为：——你可以帮我解这道数学题么？——你开玩笑么？你找错人了。bark up the wrong tree打错了主意，找错了目标。A pleasure很高兴；Hang on a minute等会儿；What’s the point？有什么意义呢？Are you kidding？你是在开玩笑吗？根据后句的意思应该选择D项。