21. For many years, fast-food franchises agreed not to ( ) one another’s workers within the same chain, but now they have agreed, under pressure, to eliminate the practice that limits their workers’ ability to take jobs at other restaurants.
A. recruit
B. train
C. educate
D. fire
【答案】A。“快餐经销一致同意不…同一连锁店的员工”，选项 A：招聘;选项 B：培训;选项 C：教育;选项 D：解雇。根据后半句表示：现在在重压之下，他们一致同意不能限制员工去其他餐馆就业的行为。可知前半句表述的是就业，是雇佣关系。故正确答案是选项 A。
22. The president has long predicted that his policies will spur growth so much that the economy will ( ) at a rate well above 3 percent—maybe even 5 percent.
A. enlarge
B. expand
C. explode
D. extend
【答案】C。“经济将以超过 3%的速度，甚至 5%的速度…”选项 A：扩大;选项 B：扩张;选项 C：爆炸、激增;选项 D：延伸、扩大。空缺处填入的词描述的对象是经济，且前半句描述这一政策会极大地刺激经济，所以补充“增长、激增”更合适，故正确答案是选项 C。
23. The whole world is undergoing a revolution in which the central ( ) must be taken by new intellectuals.
A. measure
B. attention
C. part
D. process
【答案】C。“全世界都在经历一场改革，新知识分子将是主要参与者”。选项 A：对策;选项 B：注意力;选项 C：分部、参与;选项 D：过程。观察空缺处可知是被动，且介词in提至which关系词前，正常语序是take the central…in，选项中只有part可以构成take part in 短语。故正确答案是选项 C。
24. Having lived in the country for six years, he has got into the ( ) of getting up early every day to look around the fields and see the crops.
A. habit
B. use
C. tradition
D. custom
【答案】A。“在乡村生活了六年，他已经习惯了每天早起去田野转一转，看一看庄稼”。考察固定搭配 Get into the habit of：养成做某事的习惯。故正确答案是选项 A。
25. Since your actions pose a great threat to public safety, you have a responsibility to put it ( ) and to bear the consequences.
A. correct
B. perfect
C. right
D. well
【答案】C。“你的行为已经对公共安全造成了威胁，你有责任…并承担其后果”。考察固定搭配 put it right：改正、矫正。故正确答案是选项 C。
