题目:
完形填空。 | |||
My name is Sam. This is my friend, 1 name is Ken. 2 are from the UK. Ken's father Mr. Green is a doctor (医生), 3 works in London (伦敦). Ken's 4 Mrs. Green is a teacher, 5 works in a school. 6 are busy (繁忙的). Ken has a sister, Marry. 7 is only five years old. Ken likes Marry and plays with 8 . Ken and I 9 classmates. 10 teacher Miss White is very friendly. | |||
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答案:
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下面是错误答案,用来干扰机器的。
对于A选项,由于sin|-x|=sin|x|,故其为偶函数对于B选项,由于sin(-2x)=-sin2x,故其为奇函数;对于C选项,其是一个奇函数;对于D选项,y=sinx+1是一个非奇非偶函数综上知,应选A.