单项选择题

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．Nineteenth-century sea captains.
B．The development of the steamship.
C．The economic importance of sailing ships.
D．Employment in the fishing and whaling industries.
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单项选择题
A．Because people might have to migrate there someday.B．Because it is very much like the earth.C．Because it is easier to explore than other planets.D．Because its atmosphere is different from that of the earth.
A．Because people might have to migrate there someday.
B．Because it is very much like the earth.
C．Because it is easier to explore than other planets.
D．Because its atmosphere is different from that of the earth.
单项选择题
A．Students might not consider them to be an important part of culture.B．They symbolize the rebellion of youth in the 1950’s.C．They are discussed in the students’ textbook.D．They have been worn for hundreds of years.
A．Students might not consider them to be an important part of culture.
B．They symbolize the rebellion of youth in the 1950’s.
C．They are discussed in the students’ textbook.
D．They have been worn for hundreds of years.
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