2. 外语
  3. According to the passage, people started to make glass ______. One of the extraordinary qualities of glass is that it can carry

According to the passage, people started to make glass ______. One of the extraordinary qualities of glass is that it can carry

admin2009-03-15  73
问题 According to the passage, people started to make glass ______.
One of the extraordinary qualities of glass is that it can carry ______.
选项 A、light signals
B、sound signals
C、electric signals
D、any signals
答案A
解析 第二段第三行……which are designed to carry light signals．被用来携带光子信号。
转载请注明原文地址:https://kaotiyun.com/show/MU8d777K
本试题收录于： 公共英语二级笔试题库公共英语（PETS）分类
0

公共英语二级笔试

公共英语（PETS）

相关试题推荐
随机试题
最新回复(0)