与人交往时要营造容易亲近的气氛，下面不能做到的是（）。
A.选择暖光灯
B.穿剪裁锐利的衣服
C.选择布艺装饰的场所
D.留飘逸的长发
参考答案：B
Some students in Shanghai ______ e-bags for several months. [ ]
A. have
B. have had
C. had
D. will have
高台阶开采技术在深凹露天矿使用有什么优点？
