The real cause of the problem the poor construction of the bridge.
A. results in
B. takes in
C. lies in
D. brings in
网友回答
A. results in
B. takes in
(答案→)C. lies in
D. brings in
解析： 考查动词短语辨析。句意：出现这个问题的真正原因在于桥梁的低劣的建筑质量。lie in“在于”，符合句意。result in“导致”，take in“接受，理解”，bring in“引进”，均不符合句意。