根据《镇规划标准》的规定，不属于城镇规划的建设用地标准的是（）。

A.建设用地比例

B.人均建设用地指标

C.建设用地选择

D.建设用地种类

The work we are doing is quite difficult, so your support will certainly________. [ ]

A. make any difference 

B. make a difference

C. be very different  

D. be of some difference