某机场1996～2000年的主营业务收入分别为300、600、900、1200和1500万元。

采用加权因子为0.9的一次指数平滑预测，2001年的主营业务收入估计为（）万元。

A.1155

B.1287

C.1396

D.1467

The author of the article believes that it is the test system, _____ teachers, that is responsible for the heavy

burden of the middle school students nowadays. [ ]

A. other than

B. or rather

C. rather than

D. more than