单项选择题


Passage Three
Questions 32 to 35 are based on the passage you have just heard.

A．From the western United States.
B．From only the east coast of the American Continent.
C．From all parts of the country.
D．From San Francisco Bay.
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单项选择题
A．They are found under the oceans.B．Their emissions created earth’s atmosphere.C．They were most active when earth was first formed.D．Their fumes are mostly water in the state of a gas.
A．They are found under the oceans.
B．Their emissions created earth’s atmosphere.
C．They were most active when earth was first formed.
D．Their fumes are mostly water in the state of a gas.
单项选择题
A．An old friend of his.B．His younger brother.C．His elder brother.D．His younger son.
A．An old friend of his.
B．His younger brother.
C．His elder brother.
D．His younger son.
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