2. 外语
  3. In 1490 or so, the main progress mentioned in this passage was ______. Siebe’s invention was not a perfect one, because ______.

In 1490 or so, the main progress mentioned in this passage was ______. Siebe’s invention was not a perfect one, because ______.

admin2009-06-24  31
问题 In 1490 or so, the main progress mentioned in this passage was ______.
Siebe’s invention was not a perfect one, because ______.
选项 A、too great a supply of air could result in a sudden rise to the surface
B、a sudden dive into deep water could cause the crushing of the body
C、the air pipe attached to a machine could be above the surface
D、both A and B
答案D
解析
转载请注明原文地址:https://kaotiyun.com/show/AQTd777K
本试题收录于： 公共英语五级笔试题库公共英语（PETS）分类
0

公共英语五级笔试

公共英语（PETS）

相关试题推荐
随机试题
最新回复(0)