—Don’t you think there are too many cars in our city?          

—I really think so. If there are    ___  people driving, there will be   ___    pollution.[ ]

A. less; less      

B. fewer; fewer      

C. less; fewer      

D. fewer; less

小李家长给刘老师送贵重的礼品，托其给小李换座位，刘老师收礼并换了座位，其做法（）。

A.体现礼尚往来的良好品德

B.体现关心学生

C.是利用职权谋私

D.是严慈相济