单项选择题

A．A summer heat wave.
B．The warming trend.
C．A global disaster.
D．The greenhouse effect and attendant problems.
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单项选择题
A．He is a language teacher in London.B．He is an Italian.C．He is a tourist giving his first visit to an Italian village.D．He is a Parisian.
A．He is a language teacher in London.
B．He is an Italian.
C．He is a tourist giving his first visit to an Italian village.
D．He is a Parisian.
单项选择题
A．The visiting economist has given several lectures.B．Dr. Johnson and the guest speaker dislike each other.C．Dr. Johnson invited the economist to visit their college.D．Dr. Johnson and the guest speaker have different opinions.
A．The visiting economist has given several lectures.
B．Dr. Johnson and the guest speaker dislike each other.
C．Dr. Johnson invited the economist to visit their college.
D．Dr. Johnson and the guest speaker have different opinions.
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