单项选择题

Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．Because they needed more people to work on the farm.
B．Because they thought slavers’ life so miserable.
C．Because they wanted to the slavers lead a free life.
D．Because their pillar economy asked for more labor forces.
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单项选择题
A．He wonders if he has enough time for the job.B．He is afraid he can’t get the salary in time.C．He is afraid that the job may be not so interesting.D．He thinks Professor Jamison is not a kind person.
A．He wonders if he has enough time for the job.
B．He is afraid he can’t get the salary in time.
C．He is afraid that the job may be not so interesting.
D．He thinks Professor Jamison is not a kind person.
单项选择题
A．The active volcanoes in the Antarctic.B．The icebergs and volcanoes around the world.C．How to prevent the eruption of volcanoes.D．Volcano can protect ice sheet from melting.
A．The active volcanoes in the Antarctic.
B．The icebergs and volcanoes around the world.
C．How to prevent the eruption of volcanoes.
D．Volcano can protect ice sheet from melting.
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