________ is the center of our planetary system was a difficult concept to grasp in the Middle Ages.

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• 1It is rather ________ that we still do not know how many species there are in the world today.

  A.misleading

  B.embarrassing

  C.boring

  D.demanding

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• 2We grow all our own fruit and vegetables, ________ saves money, of course.

  A.which

  B.as

  C.that

  D.what

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• 3Although not an economist himself, Dr. Smith has long been a severe critic of the government’s ________ policies.

  A.economical

  B.economy

  C.economic

  D.economics

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• 4When Jack was eighteen he ________ going around with a strange set of people and staying out very late.

  A.took to

  B.took for

  C.took up

  D.took on

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• 5We often advise him not to drink more wine ________ is good for his health.

  A.as

  B.than

  C.that

  D.but

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• 6A friendship may be ________, casual, situational or deep and lasting.

  A.identical

  B.original

  C.superficial

  D.critical

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• 7Just as the builder is skilled in the handling of his bricks, ________ the experienced writer is skilled in the handling of his words.

  A.as

  B.thus

  C.so

  D.like

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• 8A good teacher must know how to ________ his ideas.

  A.convey

  B.display

  C.consult

  D.confront

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• 9I’d rather you ________ those important documents with you.

  A.don’t take

  B.didn’t take

  C.won’t take

  D.not take

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• 10To call the music of another music-culture “primitive” is ________ one’s own standards on a group that does not recognize them.

  A.putting

  B.emphasizing

  C.forcing

  D.imposing

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