1.【2019·天津卷·单项填空】3.A study shows the students who are engaged in after-school activities are happier than _________who are not.
A. ones B. those
C. these D. them
【答案】B
【解析】考查代词。句意：一项研究表明，参加课外活动的学生比不参加课外活动的学生更开心。空格处代词与the students是对应关系，可以用the ones或者those替代。“them”指代的是前边提到的复数名词，不能与the students形成对应关系。“these”一般不用定语从句修饰。故选B。
2.【2019·江苏卷·单项填空】27.Favorable policies are ___________ to encourage employees' professional development.
A. in effect B. in command C. in turn D. in shape
【答案】A
【解析】考查介词短语。句意：好的制度政策实际上都会激发员工的专业水平的提升。A. in effect实际上；B. in command指挥；C. in turn轮流，依次；D. in shape在外形上，处于良好的状态。故选A。
