维吾尔族的传统节日多具有（）色彩。
A．基督教
B．佛教
C．伊斯兰教
D．印度教
参考答案：C
At the time of the earthquake Jeff was still in his office. He ________ to finish a project before he left for the day.
A．has tried
B．had tried
C．has been trying
D．had been trying
谁提出了程序教学法（）
A.桑代克
B.斯金纳
C.维特罗克
D.布鲁纳
