单项选择题

What is the topic of this talk().

A. The salinity of the ocean.
B. Pollutants found at sea.
C. The composition of coral reefs.
D. The weather patterns of coastal areas.

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单项选择题
What is the conversation mainly about().

A. Shooting and recreation.
B. Shooting as a sport.
C. Shooting and movie.
D. The history of shooting.
单项选择题
What has the man decided to do().

A.To buy a ticket now.
B.To buy a ticket at Perth.
C.To go to Perth first.
D.To talk to his friends.
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