Researchers discovered that plants infected with a virus give off a gas that ________ disease resistance in neighboring plants.

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• 1Prof. White, my respected tutor, frequently reminds me to ________ myself of every chance to improve my English.

  A.assure

  B.inform

  C.avail

  D.notify

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• 2The city is an important railroad ________ and industrial and convention center.

  A.conjunction

  B.network

  C.junction

  D.link

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• 3Crisis would be the right term to describe the ________ in many animal species.

  A.minimization

  B.restriction

  C.descent

  D.decline

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• 4Nobody yet knows how long and how seriously the ________ in the financial system will drag down the economy.

  A.shallowness

  B.shakiness

  C.scantiness

  D.stiffness

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• 5These causes produced the great change in the country that modernized the ________ of higher education from the mid-1860’s to the mid-1880’s.

  A.branch

  B.category

  C.domain

  D.scope

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• 6Corporations and labor unions have ________ great benefits upon their employees and members as well as upon the general public.

  A.conferred

  B.granted

  C.flung

  D.submitted

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• 7The movement of the moon conveniently provided the unit of month, which was ________ from one new moon to the next.

  A.measured

  B.reckoned

  C.judged

  D.assessed

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• 8The judge ruled that the evidence was inadmissible on the grounds that it was ________ to the issue at hand.

  A.irrational

  B.unreasonable

  C.invalid

  D.irrelevant

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• 9Fuel scarcities and price increases ________ automobile designers to scale down the largest models and to develop completely new lines of small cars and trucks.

  A.persuaded

  B.prompted

  C.imposed

  D.enlightened

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• 10What were things like in 1980s when accidents happened、

  A.Customers might be relieved of their disasters through lawsuits.

  B.Injured customers could expect protection from the legal system.

  C.Companies would avoid being sued by providing new warnings.

  D.Juries tended to find fault with the compensations companies promised.

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