补阳还五汤中重用黄芪的意义是
A．益气升阳B．大补脾肺之气，以裕生血之源C．益气固表D．大补脾胃元气，使气旺以促血行E．益气托毒外出
参考答案：D
试述我军机械化与信息化建设的关系。
According to the author, most thin people are dangerous because
A．their personalities are mostly made up of disgusting elements
B．most of their personalities carry threatening elements
C．their personalities largely endanger the life of other people
D．they have uncooperative and unpleasant personalities
