单项选择题

Passage One
Questions 26 to 28 are based on the passage you have just heard.

A．Have a greater sense of duty.
B．Can get higher pay.
C．Can avoid working hard.
D．Can avoid busy traffic.

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If a city has earned the CDC’s green status , it means that its local health teams can ______ on their own.

Passage OneQuestions 26 to 28 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。