There is still some doubt ________ the autumn sports meet will be held in our school, but there is no doubt ________ it will be held soon after our National Day holiday.

A．that; that

B．whether; whether

C．that; whether

D．whether; that

下列叙述中错误的是( )。

A．gets函数用于从终端读入字符串

B．getchar函数用于从磁盘文件读入字符

C．fputs函数用于把字符串输出到文件

D．fwrite函数用于以二进制形式输出数据到文件