The importance of environmental protection is _____ recognized among almost all the nations.

单选题

Of all the problems, this one is of the （　） importance.

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单选题

He has made a discovery, ___ of great importance to the progress of science and technology.

答案解析

单选题

The importance of environmental protection is _____ recognized among almost all the nations.

答案解析

单选题

10. What is the best title of the passage?A. Friendship vs. Money????????????????????????????? B. The significance of friendship in our lifeC. The importance of friendship in different culturesD. The importance of experiencing friendship in different cultures

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单选题

The sequence of aircraft position report en-route should be _______ ．

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