题目内容

Water conservation is not only ___ our economy but also a task of strategic importance.

A. in the interest of
B. on the point of
C. around the corner of
D. in the absence of

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I missed the game, but I saw the ___ on the evening news.

A. highlights
B. innovations
C. civilizations
D. conservations

The project aims at providing ___ energy in power-starved areas of the world.

A. complicated
B. abundant
C. local
D. promising

Dogs, if treated properly and trained with firm kindness, are faithful and ___.

A. conditional
B. dependent
C. reliant
D. reliable

She is always seeking to improve the ___ and effectiveness of teaching.

A. sufficiency
B. deficiency
C. efficiency
D. facility