If people weren't prepared to experiment with new teaching method．thin-考呗网

单选题If people weren't prepared to experiment with new teaching method．thing would never change．

[分析]动词辨析
experiment with表：进行试验，做试验；A．campmgIl参加活动，作战；B．swerve突然转向；C endeavor尽力，努力，尝试；D．manipulate(熟练地)操作，巧妙地处理；因此C为答案。

1The firm's CEO is not one for discourse；when he opened his mouth，it was to issue a command．

2However，beyond that dolorous picture，there is a revolution at work in world agriculture．

3Wilson could not control his deep jealousy at the thought of another man taking up his role as father．