题目

The musician along with his band members ________ ten performances in the last three months. A . gives B . has given C . have given D . give 答案：B 下列物质的用途中，主要是利用其化学性质的是 [　　] A． 用铜丝作导线 B． 用石墨作铅笔芯 C． 用粮食酿造酒 D． 用干冰作制冷剂