问题补充:
After a careful survey about the cause of the newly-built bridge, they finally came to a(n) that it was due to the heavy rain.
A. construction
B. motivation
C. conclusion
D. impression
答案:
A. construction
B. motivation
(答案→)C. conclusion
D. impression
解析:句意:在对新建的大桥的原因进行仔细的调查后,他们最后得出结论是由于大雨。四个选项的含义分别是:A. Construction建设,B. Motivation动机,激发,C. Conclusion结论,D. Impression印象,这里也使用了词组:come to conclusion得出结论,所以选C。