砌筑砂浆的强度等级不低于()。
A.M1.0
B.M2.5
C.M5.0
D.M7.5
参考答案:B
Which of the following is the most widely accepted theory about the beginning of drama().
A.Drama came from seasonal changes.
B.Drama originated from ritual.
C.Drama evolved from stories.
D.Drama came from natural forces.
在()时候科举制度被废掉。
A、光绪年间
B、咸丰年间
C、康熙年间
D、顺治年间