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【简答题】
已知函数f（x）=2 x （1）设函数y=f（x）的反函数为y=g（x），求函数y=g（x 2 -2x-3）的单调递增区间； （2）求满足不等式f（|x+1|-|x-1|） ≥2 2 的x的取值范围．
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A.
sense
B.
custom
C.
method
D.
practice
【多选题】在基本实现社会主义现代化目标时,( )的社会风尚基本养成。
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B.
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【单选题】—Do I need to give a tip if I eat at a fast food restaurant in the United States? —Yes, it’s a common ______ to tip waiter in a restaurant.
A.
sense
B.
custom
C.
method
D.
practice
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