A．2,250 RMBB．18,900 RMBC．189,000 RMBD．225,000...
The factory ______ 20,000 bicycles a month.
A. turns into
B. turns up
C. turns in
D. turns out
The number of salmon every spring in British Columbia's rivers four years earlier is______.
Which of the following is NOT true according to the passage？
A．The climate in recorded human history has generally remained stable.
B．The climate from about 135,000 to 115,000 years ago was in an extremely cold state.
C．The human race has been lucky to have enjoyed the most favorable period Of climate for them to build a socio-economic system.
D．The evidences scientists collected from the ice cores suggest that a civilization cannot have arisen in the period from about 135,000 to 115,000 years ago.