2. 外语
  3. The entire process is called the greenhouse effect, and most of it is caused by the prevalent greenhouse gas, water vapor.

The entire process is called the greenhouse effect, and most of it is caused by the prevalent greenhouse gas, water vapor.

admin2009-06-15  71
问题 The entire process is called the greenhouse effect, and most of it is caused by the prevalent greenhouse gas, water vapor.
选项 A、predominant
B、executive
C、superior
D、remarkable
答案A
解析 predominant：优越的；executive：行政的；superior：优秀的；remarkable：值得注意的。题中prevalent为“有优势的”，可知A项最适合要求。
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