题目

Advertising often functions as an indicator forsociety considers to be socially acceptable and desirable at the time.A.what B.whetherC.how D.which 答案：【答案】A【解析】考查介词的宾语从句。句意：广告常常作为一种标志，说明当时社会认为什么是可接受和可取的。此处for后面是一个介词的宾语从句，从句缺少引导词，从句的谓语动词considers缺少谓语，故选A。2．计算：①-4-28-（-19）+（-24）②（-$\frac{1}{2}$-$\frac{5}{9}$+$\frac{7}{12}$）÷（-$\frac{1}{36}$）③（-3）3÷2$\frac{1}{4}$×（-$\frac{2}{3}$）2+4-23×（-$\frac{1}{3}$）④-42-[-2-（5-0.5×$\frac{1}{3}$）×（-6）]．