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He knows little of mathematics, and （）of chemistry.
A、even more
B、still less
C、no less
D、still more
【正确答案】：B
【题目解析】：even more更多的；still less更少的；no less不少；still more更加；况且。句意为：他对数学知之甚少，对化学更是一无所知。所以应选B