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—Would you like some pop? —________. I would like some tea.
1年前
— I'm sorry. I _____ at you the other day. — Forget it. I was a bit out of control myself. [ ]
1年前
江西某地以十八届三中全会进一步加强新农村建设为契机,紧紧围绕农民最关心,反映最强烈的问题,抓好“新农合”. “村务公开”等事项。这些措施的实施有利于
1年前
1年前
f(x1,x2,x3)=2x1x2+2x1x3+2x2x3,求一正交变换x=py,将此二次型化为标准型.那是X
1年前