I think you are at the end of your this time and need to turn to Pro. Smith for advice.A.

问题补充：

I think you are at the end of your this time and need to turn to Pro. Smith for advice.

A. resources

B. careers

C. features

D. issues

答案：

(答案→)A. resources

B. careers

C. features

D. issues

解析：我认为你这次智穷力竭需要求助于史密斯教授的建议。四个选项的含义分别是：A. resources资源，物力，财力，办法，智谋，B. careers事业，C. features特征，特性，D. issues问题，（报刊的）期，号，发行物，流出，这里用了词组：attheendofonesresources智穷力竭，所以选A。