问题
单项选择题
One reason for the successes of Asian immigrants in the U.S. is that they have taken great______ to educate their children.
A．efforts
B．pains
C．attempts
D．endeavours
答案
参考答案：B
解析： pains努力，辛苦，可与take搭配，have taken great pains意思是“煞费苦心”。A．efforts努力；C．attempts试图，尝试；D．endeavours努力，与efforts同义。A、C、D项都不与动词take搭配。