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The passage is chiefly about ______. The underwater listening system was originally designed ______.
The passage is chiefly about ______. The underwater listening system was originally designed ______.
admin
2009-03-16
78
问题
The passage is chiefly about ______.
The underwater listening system was originally designed ______.
选项
A、to trace and locate enemy vessels
B、to monitor deep-sea volcanic eruptions
C、to study the movement of ocean currents
D、to replace the global radio communications network
答案
A
解析
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本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
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公共英语四级笔试
公共英语(PETS)
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