单项选择题

A．Americans.
B．Japanese:
C．Latin Americans.
D．Chinese.
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单项选择题
A．Marriage is not popular in America because of too many divorces.B．Eighty percent of divorced people will still remarry in America.C．In the new century, most American people will marry two or three times in one life-time.D．Americans frequently change their jobs and the place of living.
A．Marriage is not popular in America because of too many divorces.
B．Eighty percent of divorced people will still remarry in America.
C．In the new century, most American people will marry two or three times in one life-time.
D．Americans frequently change their jobs and the place of living.
单项选择题
A．A scarcity of jobs in their field.B．Inadequate training in methods of biological research.C．Difficulties in classifying all of the varieties of owls.D．A lack of funding for their work with endangered species.
A．A scarcity of jobs in their field.
B．Inadequate training in methods of biological research.
C．Difficulties in classifying all of the varieties of owls.
D．A lack of funding for their work with endangered species.
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