Withnaturalresourcesrunningout,manismakingeveryeffortt...

問題詳情：

 With natural resources running out, man is making every effort to search for a certain ______ to meet the demand of energy.

A.      alternative                 B. available                   C. access                          D. approach

【回答】

A

知識點：名詞

題型：選擇題