题目内容

利用闭包可以让变量的值始终保持在内存中。( )

A. 对
B. 错

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斐波那契数列从第3项开始,每一项都等于前两项之和。( )

A. 对
B. 错

However, today we are coming to realize that tourism is a mixed ______: it has advantages and disadvantages.

A. welfare
B. benefit
C. boon
D. blessing

I was the first to ask him ______ questions that made him embarrassed but there'll be harder ones to come.

A. sharp
B. harsh
C. awkward
D. picky

We can ______ by the bar and go for a drink.

A. drop
B. fall
C. pull
D. stop