19.It's very dufficult to ____ the exact meaning of an idiom in a foreign language.
A.exchange B.transfer C.convey D.convert.
20.When we are reading,the important thing is to ____ the essential meaning,not to learn every single word.
A.clasp B.grab C.grasp D.grapple.
21.Calipers are instruments that can be used to ____ the distance between two surfaces.
A.count B.measure C.figure D.calculate.
22.The twins are so much alike that people find it difficult to ____ one from the other.
A.separate B.compare C.choose D.distinguish.
23.Before I bought the jeans,I asked if I could ____ them on.
A.put B.wear C.try D.have.
24.Harvard University has been ____ the best university in a recent annual survey.
A.listed B.catalogued C.ranked D.classified.
25.This can ____ the worry between a couple that they don't understand each other.
A.release B.relent C.relieve D.relay.
26.Many distinguished men have ____ from slums.
A.emanated B.loomed C.appeared D.emerged.
27.The basic difference between Americans and Canadians ____ in their definition of the individual in society.
A.lays B.lies C.locates D.perches.
28.Even the best-built machine will not run forever without proper ____.
A.retention B.reserve C.preservation D.maintenance.
29.The most advanced communication ____ can pass information to any member state in no more than five seconds.
A.furniture B.facilities C.equipment D.ornaments.
30.Many patients expressed ____ of loneliness,being upset or depressed.
A.feelings B.passions C.emotions D.thoughts.
