单项选择题

America's emphasis on the importance of education for everyone has spurred scientific research,

A．encouraged
B．endangered
C．endorsed
D．enlarged
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单项选择题
The 10-year risk of heart disease is low for most US adults.
A． Right
B． Wrong
C． Not mentioned
单项选择题
Only 3 percent of US adults have a more than 10 percent 10-year risk of heart disease.
A． Right
B． Wrong
C． Not mentioned
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