国家开放大学 / 综合英语（2）
正确率：100%
The living standards of the new immigrants were improved in the late nineteenth and early twentieth centuries mainly because _ _ _ _ .
a.they kept the political bosses in power
b.the political bosses gave them a lot of practical help
c. they had a much stronger feeling of being a part of the larger culture
d.there was a rapid growth in American economy at that time
a.they kept the political bosses in power
b.the political bosses gave them a lot of practical help
c. they had a much stronger feeling of being a part of the larger culture
d.there was a rapid growth in American economy at that time
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