电子商务采购
参考答案：
是指基于、至少部分基于互联网技术的采购方式。
There are about 3,000 students in our school, _____ made up of girls.[ ]
A. 46% of them
B. and 46% of them
C. 46% of whom
D. and 46% of whom are
具有祛痰功效的药物是
A．白头翁 B．大青叶 C．穿心莲 D．射干 E．鱼腥草
