2. 外语
  3. Space is full of unseen hazards among which are cosmic rays.

Space is full of unseen hazards among which are cosmic rays.

admin2013-01-29  35
问题 Space is full of unseen hazards among which are cosmic rays.
选项 A、dangers
B、ventures
C、galaxies
D、prospects
答案A
解析 hazard危险，公害。danger危险。venture冒险。galaxy银河系。prospect展望，前景，前程。
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