This practice satisfies people of high moral standards psychologically and materially and

This practice satisfies people of high moral standards psychologically and materially and encourages other people’s enthusiasm.
A. on the contrary
B. in the meantime
C. from time to time
D. all at once

A. on the contrary(答案→)B. in the meantimeC. from time to time D. all at once解析：考察介词短语辨析。A恰恰相反；B与此同时；C时而不时；D立刻；句意：这种做法在精神上和肉体上都满足了高道德标准的人的要求，同时也鼓励了其他人的热情。根据句意说明B正确、

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