求助

miafy

GWD-10-Q30:GWD-2-17

The quality of unrefined olive oil is not actually defined in terms of acidity, yet extensive tests have shown that the less free oleic acid an unrefined olive oil contains per liter, the higher its quality.  The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity.

 

If the statements above are all true, which of the following conclusions is best supported by them?

 

1. When an olive oil is refined, the concentration of oleic acid in the oil is reduced.

2. The quality of an unrefined olive oil can be determined only by accurately measuring its acidity.

3. If an unrefined olive oil is intermediate in acidity between two other unrefined olive oils, it will also be intermediate between them in quality.

4. Free oleic acid is the only acid that unrefined olive oil contains.

5. People who judge the quality of unrefined olive oils actually judge those oils by their acidity, which the judges can taste.

答案是Ｃ啊，可不可以帮忙分析一下

ivyqxx

三个条件：1。未精炼的橄榄油的品质不是由酸度决定的；

          2。大量的测试显示较少的O酸，则该未精炼的橄榄油有较好的质量；

          3. O酸的比例是橄榄油酸度的精确测量值；

问support by them,其实就是问那个答案可以从原文中得出；我觉得ABDE都不是很么大的干扰项阿。。。