In my opinion, you can widen the of these improvements through your active participation.

In my opinion, you can widen the of these improvements through your active participation.
A. dimension
B. volume
C. magnitude
D. scope

A. dimensionB. volumeC. magnitude(答案→)D. scope解析：scope(=the area within the limits of a questions, subject ect. ; range)(活动)范围，机会，余地：The politics of a country would be outside the scope of a book for tourists.(一个国家的政治不属于旅游手册的内容范围之内。)dimension尺寸，尺度；magnitude大小，数量；volume体积。均不切题，不能入选。本题译文：依我看，通过你的积极参与，你能够扩大这些改进措施的范围。

这下我知道了