单项选择题

A．Big waves pose a threat to commercial navigation.
B．The river current never flows faster ten miles per hour.
C．The river reverses its flow several times a day.
D．High tides can create sudden and unexpected rapids.
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单项选择题
A．Individual states.B．Federal government.C．Taxes of citizens.D．Parents.
A．Individual states.
B．Federal government.
C．Taxes of citizens.
D．Parents.
单项选择题
A．She prefers the job where he could travel a lot.B．She prefers the job where she could make good money.C．She prefers the job where she could meet international business people.D．She prefers the job that would give her lots of chances of promotion.
A．She prefers the job where he could travel a lot.
B．She prefers the job where she could make good money.
C．She prefers the job where she could meet international business people.
D．She prefers the job that would give her lots of chances of promotion.
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