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Eta Carinae is now engaging in The word "period" in Paragraph 3 means the length of time
Eta Carinae is now engaging in The word "period" in Paragraph 3 means the length of time
admin
2009-06-15
53
问题
Eta Carinae is now engaging in
The word "period" in Paragraph 3 means the length of time
选项
A、over which stars vary in brightness.
B、for which Eta Carinae’s brightening lasts.
C、Eta Carinae takes to become a supernova.
D、it takes the laser from Eta Carinae to travel to the earth.
答案
A
解析
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本试题收录于：
职称英语理工类C级题库职称英语分类
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职称英语理工类C级
职称英语
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