超星 - 四级词汇7-10 - 查题吧

单选题

Although it was his first experience as chairman, be ________ over the meeting with great skill.

A. presided
B. administered
C. mastered
D. executed

单选题

The ________ from childhood to adulthood is always critical time for everybody.

A. conversion
B. transition
C. turnover
D. transformation

单选题

_______ efforts are needed in order to finish important but unpleasant tasks.

A. consecutive
B. condensed
C. perpetual
D. persistent

1