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问题
解答题
把一个圆平均分成8份，每份是这个圆的
1
8
．______（判断对错）．
答案
把这个圆看作单位“1”平均分成8份，每份是这个圆的
1
8
．
故答案为：√．
填空题
函数f（x）=sin
2
x+sinxcosx+2的最小正周期是（ ）。
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选择题
— How long have you _____?
— It's about ten years since we _____.
A. married, married
B. been married, were married
C. got married, got married
D. been married, got married
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