单选题You will see what gr

问题补充：

单选题Youwillseewhatgreatbenefitthecomputersyouowncanbe_____everytimeweusethem.A.atB.ofC.forD.on

答案：

B解析本题考查介词。将从句what great benefit the computers you own can be变为正常语序应是the computers you own can be_____what great benefit。其意义是“你的电脑可能非常有用处”故用介词of。be of great benefit（ to）（对……）很有帮助。