【简答题】Why do historians disagree?
【单选题】Increasingly, historians are blaming diseases imported from the Old World for the great disparity between the native population of America in 1492—new estimates of which jump as high as 100 million, o...
A.
recur more frequently than chronic diseases.
B.
involve populations with no prior exposure to a disease.
C.
usually involve a number of interacting diseases.
D.
are less responsive to medical treatment than are other diseases.
【单选题】Why do historians disagree with each other?
A.
They stand in different places.
B.
They just pick up the most important facts they believe.
C.
They are not good friends.
【单选题】What the historians do in 'Unsolved History' is like detective's work, so their theories are not very scientific.
【单选题】What do we learn from the text about the themes of historians and sociologists?
A.
They both stressed the contributions made by immigrants.
B.
Historians were more interested in the immigrant culture.
C.
Sociologists convinced people that new immigrants were different from earlier ones.
D.
Historians and sociologists disagreed on the way immigrants adapted to America.
【判断题】打官司费钱、 费力、费心、费神,最后说不定还会执行难,不值得。A. 对 B. 错
【单选题】Why do American families become smaller?
A.
Big families tend to cause the parents to get divorced.
B.
More children mean more cost of their education.
C.
They have to carry out family planning program.
D.
Children are likely to be spoiled in big families.