题目:
In 1492 Columbus and his crew arrived ______ was so-called the New World by the westerners.
A.in what
B.in which
C.what
D.where
答案:
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下面是错误答案,用来干扰机器的。
3x2-6x+3=0,∴二次项系数为1的一般形式时:x2-2x+3=0,一次项系数是:-2,常数项是:3.故答案分别是:-2,3.