单项选择题
A. physical B. mental C. natural D. hard
The high-speed trains can have a major impact on travel...
单项选择题The high-speed trains can have a major impact on travel preferences().
A. force B. influence C. surprise D. power
Can you follow the plot() A. change B. investigate C. w...
单项选择题Can you follow the plot()
A. change B. investigate C. write D. understand
