Question

----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

Answer 1

A

考查介词的用法。根据对话情景，答语中的意思是：肯定了数学在高中难学，而且补充说明哪门课程都需要刻苦学习才能学好。因为本句是个否定句，所以要用表示否定的介词without。