2. 专升本
  3. Petrol is refined from the______oil we take out of the ground.

Petrol is refined from the______oil we take out of the ground.

admin2015-07-21  32
问题 Petrol is refined from the______oil we take out of the ground.
选项 A、crude
B、fresh
C、rude
D、original
答案A
解析
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