【题目】After decades of effort, the city is still trying to _____ how to stop smoking in public places.
A.try outB.let outC.figure outD.run out
在线课程【答案】C
【解析】
考查动词词组辨析。句意：经过几十年的努力，该市仍在试图找出如何在公共场所禁烟的方法。A. try out尝试；B. let out泄露；C. figure out找出；D. run out耗尽。根据前半句经过几十年的努力，推断应该是试图找出更符合语境，故选C。