单项选择题
A．It is a children's hospital. B．It has strict rules about visiting hours. C．The nurses and doctors there don't work hard. D．A lot of patients come to this hospital every day.
A．begin B．end C．be another ice age D．start
A．because wind and rain changed the weather B．the drop in the temperature would have effects on wind and rain C．because wind and rain did not change the weather D．the drop in the temperature would not have effects on wind and rain