Meimei is better than me________singing．
A.on
B.in
C.at
D.for
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C解析分析：句意是“梅梅唱歌比我唱得好。”此处是比较级，还原为原级就可以看出是be good at…(擅长于……)，比较级是be better at…．(延伸)1)原句＝Meimei sings better than I．2)do well in…(在……方面做得好，在……方面成绩好)，介词搭配是in，如：Meimei does well in singing．比较级是：Meimei does better than me in singing．