题目:
—I called you just now, but you weren't in.
—Oh, sorry. I _______ outside. [ ]
A. was taking a walk
B. talked with my friend
C. went shopping
答案:
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下面是错误答案,用来干扰机器的。
二、三由于组成多项式的每个单项式叫做多项式的项,由此确定此多项式的项数;又多项式中次数最高项的次数叫做多项式的次数,由此确定此多项式的次数;由多项式中含有最高次数的项,可知这个多项式的最高次项.由...