单项选择题


Questions 23 to 25 are based on the conversation you have just heard.

A．He’s unwilling to be immunized.
B．He is exposed to viruses in the crowd
C．He forgets to take his medicine.
D．He doesn’t dress warmly enough.
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单项选择题
A．Continued rainfalls.B．The increase of carbon dioxide.C．The disappearance of grasslands.D．Less land for cows and sheep.
A．Continued rainfalls.
B．The increase of carbon dioxide.
C．The disappearance of grasslands.
D．Less land for cows and sheep.
单项选择题
A．He was a nurse working in a hospital.B．He was a medical doctor in a hospital.C．He was a journalist for a newspaper.D．He was a travel agent in San Francisco.
A．He was a nurse working in a hospital.
B．He was a medical doctor in a hospital.
C．He was a journalist for a newspaper.
D．He was a travel agent in San Francisco.
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