Since the Great Depression, the United States government has protected farmers from damaging drops in grain prices.

单项选择题We shall take the treasure away to a safe place.

单项选择题Gas does accumulate in the mines around here.

单项选择题Nerve signals may travel through nerve or muscle fibers at speeds as high as two hundred miles per hour.

单项选择题Our plan is to allocate one member of staff to handle appointments.

单项选择题In order to improve our standard of living, we have to accelerate production.