Unfortunately, we cannot immediately send you a full range of samples _________.( ) A: free of charge B: free of payment C: with payment D: without charge

2. Because of this, consumers in free trade areas are offered a wider range of high _____ products at _____ prices. ?xml:namespace>

使用for循环计算1-100的和,range为: A: range(1,100) B: range(1,99) C: range(1,101) D: range(1,100,1)

使用for循环10次，需要（）。 A: range（10） B: range（9） C: range（） D: range（11）

You can travel _____, but children under five travel ____. A: freely … free B: free … freely C: free … free D: freely … freely

range(10)等价于range(1,10,1)。

In a “first-best” world：（ ） A: Free trade is not optimal. B: Free trade is economically efficient. C: Free trade benefits everyone. D: Free trade harms everyone.

Customer: How much are the eggs Saleswoman: ______ A: They are free-range. B: We have some free-range eggs. C: The free-range eggs cost more than regular ones. D: The free-range ones are $3.95 a dozen.

下列语句中,循环次数最多的是( ) A: for x in range(1,5) B: for x in range(0,5) C: for x in range(2,5) D: for x in range(1,5,2)

下列语句中,循环次数最少的是( ) A: for x in range(1,10) B: for x in range(2,10) C: for x in range(3,10) D: for x in range(1,20)