单项选择题

A．Lack of oxygen.
B．Overgrowth of water plants.
C．Low water level.
D．Serious pollution upstream.
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单项选择题
A．The library has already chosen some people to work there.B．She is going to give the man a job offer.C．The library is looking for more applicants.D．The man should hurry up.
A．The library has already chosen some people to work there.
B．She is going to give the man a job offer.
C．The library is looking for more applicants.
D．The man should hurry up.
单项选择题
A．He sent surgeons to serve in the army.B．He provided soldiers with medical supplies.C．He recruited volunteers to care for the wounded.D．He helped to flee the prisoners of war.
A．He sent surgeons to serve in the army.
B．He provided soldiers with medical supplies.
C．He recruited volunteers to care for the wounded.
D．He helped to flee the prisoners of war.
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