12. 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

注意：此页面搜索的是所有试题

12. 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

随机试卷

贵州医科大学-护理学研究