题目选项分析

Aware of the connotations of the numbers 1 and 2 and the letters A and B, companies conducting consumer taste tests of foods or beverages typically choose numbers such as 697 or 483 to label the products.

Because the numbers 1 and 2 and the letters A and B have connotations they are aware of, companies conducting consumer taste tests of foods or beverages typically choose numbers such as 697 or 483 to label the products.