NO.PZ2015122802000148
问题如下：
Which of the following industries is most likely to be considered to have the lowest barriers to entry?
选项：
A.Confections and candy.
B.Oil services.
Branded pharmaceuticals.
解释：
A is correct.
The Confections and candy industry has medium/low barriers to entry：Low financial or technological hurdles, but new players would lack the established brands that drive consumer purchase decisions and potential supply chain operations.
原来的答案是oil，也能解释得通： candy被几家大公司垄断，而oil相对来说门槛较低。 当时觉得这个答案很不可思议。
现在改成oil了，但又如何解释『candy被几家大公司垄断』呢？
总之不同的维度比较结果就不一样，考试时遇到这类问题怎么办？
