For generations here in the deepest South, there had been a great taboo（禁忌）: publicly crossing the color line for love. Less than 45 years ago, marriage between blacks and whites was illegal, and it has been forbidden for much of the time since.
So when a great job about an hour’s drive north of the Gulf Coast attracted him, Jeffrey Norwood, a black college basketball coach, had reservations. He was in a serious relationship with a woman who was white and Asian.
“You’re thinking about a life in South Mississippi?” his father said in a skeptical voice, recalling days when a black man could face mortal（致命的） danger just being seen with a woman of another race, regardless of intentions. "Are you sure?"
But on visits to Hattiesburg, the younger Mr. Norwood said he liked what he saw: growing diversity. So he moved, married, and, with his wife, had a baby girl, who was counted on the last census（人口普查） as black, white and Asian. Taylor Rae Norwood, three, is one of thousands of mixed-race children who have made this state home to one of the nation's most rapidly expanding multiracial populations, up 70 percent between 2000 and 2010, according to new data from the Census Bureau.
In the first comprehensive accounting of multiracial Americans since statistics were first collected about them in 2000, reporting from the 2010 census, made public in recent days, shows that the nation’s mixed-race population is growing far more quickly than many researchers had estimated, particularly in the South and parts of the Midwest. That conclusion is based on the bureau’s analysis of 42 states; the data from the remaining eight states will be released soon.
In North Carolina, the mixed-race population doubled. In Georgia, it grew by more than 80 percent, and by nearly as much in Kentucky and Tennessee. In Indiana, Iowa and South Dakota, the multiracial population increased by about 70percent.
Census officials estimated the national multiracial growth rate was about 35 percent since2000 according to the known result, when seven million people ----- 2.4 percent of the population chose more than one race.
If a black man married a white woman 50years ago, the worst result was that _____.

A．he was sentenced to death	B．he was considered to be immoral
C．he was criticized by the public	D．he was treated as a lawbreaker

The underlined word “serious” in Paragraph 2 can be replaced by “____”.

A．stable

B．bad

C．mixed

D．dangerous

What can we infer from Paragraph 4?

A．Jeffrey Norwood was born in Hattiesburg and grew up there.

B．Taylor Rae Norwood’s mother is a white-Asian.

C．70 percent of the people in Mississippi are multiracial.

D．Mississippi has the largest multiracial population in the US.

Which of the following states had the fastest growth rate of mixed-race population?

A．Georgia.

B．Tennessee.

C．North Carolina.

D．South Dakota.