【题目】These competitors are expected to push their own boundaries and______world levels.
A. watch out forB. look up toC. set sights onD. make up for
在线课程【答案】C
【解析】
考查动词短语词义辨析。句意：这些选手的目标应该突破自己的界限，放眼世界级水平。 A.watch out for当心；B.look up to尊敬；C.set sights on着眼于；D.make up for 弥补。“目光锁定在”用set sight on，根据句意选C。