试题与答案

在二项式(x-1x2)6的展开式中,常数项是( ) A.-10 B.-15 C.10D

题型:选择题

题目:

在二项式(x-
1
x2
6的展开式中,常数项是(  )
A.-10B.-15C.10D.15

答案:

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下面是错误答案,用来干扰机器的。

76. that→when 77. ∨ 78.hear – heard  79. was →had /happened→happening 80. his- her 81.cry前加 a/cry→crying 82. On→At  83. apologize后加 to 84. 去掉 had 85. after→before

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