单选题In order to prepare a lecture, one must do a lot of research and spend plenty of time _____ his material so that his speech is clear and easy to follow.AorganizingBmanagingCoperatingDbreeding

单选题
In order to prepare a lecture, one must do a lot of research and spend plenty of time _____ his material so that his speech is clear and easy to follow.
A

organizing

B

managing

C

operating

D

breeding


参考解析

解析:
句意:准备讲座时,首先要做大量研究工作,然后再长时间地组织材料;这样整个演说才能清晰易懂。organize意为“组织,统筹布置成一种紧凑的形式”;manage意为“处理,操纵”;operate意为“操作,运转,经营”;breed意为“繁殖,抚养”。

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