1、He does not _______as a teacher of English as his pronunciation is terrible.

　　A.equal　　B.match　　C.qualify　　D.fit

　　2、Dozens of scientific groups all over the world have been ___ the goal of a practical and economic way to use sunlight to split water molecules.

　　A.pursuing　　B.chasing　　C.reaching　　D.winning

　　3、The discussion was so prolonged and exhausting that _______the speakers stopped for refreshments.

　　A.at large　　B.at intervals　　C.at ease　　D.at random

　參考答案：

　　1、C　2、A　3、B