提出认知结构学习论的心理学家是( )。
A．奥苏伯尔
B．布鲁纳
C．加涅
D．桑代克
参考答案：B
The zoo is far away from my hotel. It me at least two hours to get there. [ ]
A. took
B. has take
C. takes
D. will take
开瓣音是由于（）
A．瘀点
B．充血性皮疹
C．瘀斑
D．血肿
E．小红痣
