选择题：Copper as well as most metals _____ of electricity

题目内容：
Copper as well as most metals _____ of electricity, but wood is a poor one.
A. is a good conductor

B. are good conductors
C. is a good insulator

D. are good insulators
参考答案：

13. 公务员参与或支持色情、吸毒、迷信、 赌博等活动的行为,违反了( )(本题2.0分)A. 保持

13. 公务员参与或支持色情、吸毒、迷信、 赌博等活动的行为,违反了( )(本题2.0分)A. 保持操行的义务B. 公正清廉的义务C. 忠于宪法的义务D. 其它

分类：河北建筑工程学院-建筑学-大学英语1  题型：选择题
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