—Jack,isMathsdifficulttolearninhighschool?—Sure.Nosubje...

问题详情：

—Jack, is Maths difficult to learn in high school?

—Sure. No subject can be learned well ________ hard work.

A. without      B. through     C. by     D. with

【回答】

A

知识点：介词和介词短语

题型：选择题