—Which of these two sports sweaters will you take?

—I’ll take           . They look nearly the same, and I just need one.

A．both

B．either

C．none

D．neither

取得同样质量的成果，教育资源占用和消耗的愈多，教育效率就 【 】

A．越高

B．恒定

C．越低

D．无法比较