万物存在吾心中的观点是（）。
A.客观唯心主义
B.主观唯心主义
C.形而上学唯物主义
D.科学主义
参考答案：B
They were surrounded by the enemy, but they________at last from the village. [ ]
A. managed escaping
B. tried to escape
C. managed to escape
D. tried escaping
采煤工作面允许的最高风速不得大于（）m/s。
A、3
B、4
C、5
D、6
