单项选择题


Questions 19 to 21 are based on the conversation you have just heard.

A．International children’s projects.
B．Social and environmental projects.
C．Projects for people with no money.
D．Projects involving sports and languages.
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单项选择题
A．The workers on the underground platforms were replaced by machines.B．It became the first completely automatic railway in the world.C．A completely automatic line was added to its network.D．Its trains became computer-controlled.
A．The workers on the underground platforms were replaced by machines.
B．It became the first completely automatic railway in the world.
C．A completely automatic line was added to its network.
D．Its trains became computer-controlled.
单项选择题
A．Red Cross workers are in many countries.B．Red Cross only exists in the United States.C．Red Cross is another name for world hospital.D．Many people who are in need work in Red Cross.
A．Red Cross workers are in many countries.
B．Red Cross only exists in the United States.
C．Red Cross is another name for world hospital.
D．Many people who are in need work in Red Cross.
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