单项选择题

The word "presented" in Line 3 of Paragraph 5 can be best replaced by ______.

A.appeared
B.introduced
C.challenged
D.changed
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单项选择题
We can infer from the passage that ______.
A.Hispanics are the largest minority group in the United States
B.Ethiopia will become the most populous country in the future
C.in the future, China' s population will grow faster than India' s
D.Asian-Americans will be the most powerful minority in the US
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