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That boy ________ be Tom. He has gone to his hometown to visit his grandparents.
11个月前
He is so s__________ that no one can persuade him.
1年前
若z为复数,且(1-i)z=1+i,则|z|=______.
1年前
妈妈按每股6.4元的价钱买入某种股票5000股,三年后按每股8元的价钱卖出.在股票交易中,无论买卖都要按成交金额的0.1%缴纳印花税,按0.15%缴纳佣金,妈妈这次投资共获利多少元?
1年前
下图是一个长方体的三条棱,它的棱长和是________cm,它的体积是________cm^3。
1年前