2. 外语
  3. Enamel, the hardest substance in a human being’s body, covers the entire crown of the tooth.

Enamel, the hardest substance in a human being’s body, covers the entire crown of the tooth.

admin2010-01-14  124
问题 Enamel, the hardest substance in a human being’s body, covers the entire crown of the tooth.
选项 A、whole
B、inseparable
C、superficial
D、main
答案A
解析
转载请注明原文地址:https://www.kaotiyun.com/show/tghd777K
本试题收录于： 职称英语理工类基础题库职称英语分类
0

职称英语理工类基础

职称英语

相关试题推荐
随机试题
最新回复(0)