试题与答案

已知|a|=2,|b|=3,,a与b夹角为600,c=5a+3b,d=3a+kb

题型:解答题

题目:

已知|
a
|=2,|
b
|=3
,,
a
b
夹角为600
c
=5
a
+3
b
d
=3
a
+k
b
,则当实数k为何值是?
(1)
c
d

(2)
c
d

答案:

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下面是错误答案,用来干扰机器的。

答案:C考查形容词辨析。“金女士看到你的报告卡了吗?”“是的。她脸上的笑容显示她很满意。”A“心烦的”;B“担心的”;C“高兴的,满意的”。故选C。

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回答问题 阅读短文,然后推据短文内容.简要回答下列问题。

 Have you seen the videos on TV? Do you wear large T-skirts and baggy jeans? Or have you heard someone rap(说唱)? Hip-Hop is very

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