鸦片战争后，中国开始沦为[ ]
A．封建社会
B．半殖民地半封建社会
C．殖民地国家
D．资本主义社会
答案：B
蝇每年监测的时间是每年的（）。
A.3月—10月
B.5月—9月
It was one of those days when it looked at first something interesting could happen, but then later, when you didn’t expect anything, almost everything happened.()
A. nothing
B. anything
C. everything
D. all things
