2. 职称英语
  3. A、When the sun is very active and explosions occur.B、When it is less than 1,500

A、When the sun is very active and explosions occur.B、When it is less than 1,500

游客2023-08-06  9
问题
选项 A、When the sun is very active and explosions occur.
B、When it is less than 1,500 miles away from the earth.
C、When bad weather occurs more frequently.
D、When there is less forest on the earth.
答案 A
解析
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