10.(2015山东聊城，26)—Look!Whoisbeautifulgirlinred?—Ohsheismydeskmate.A.aB.anC.theD.不填
10. ( 2015 山东聊城，26 ) —Look!Who is beautiful girl in red?
—Oh she is my deskmate.
A. a B. an C. the D. 不填
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对于有理数a、b，定义运算：“”，ab=ab﹣a﹣b﹣2．（1）计算：（﹣2）3的值；（2）填空：4 2021-01-20 …