I listened to Dr.Wilson's lecture about the protection of wild animals,but I was unable to grasp its key _________.

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• 1Success in money is not always a good __________ of success in life.

  A.level

  B.medium

  C.criterion

  D.criteria

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• 2—What's the matter,doctor? —Nothing serious.Take this medicine according to the __________,and you'll get better soon.

  A.introductions

  B.explanations

  C.suggestions

  D.instructions

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• 3Of the seven days in a week, Saturday is said to be the most popular ________ for a wedding in some countries.

  A.way

  B.situation

  C.event

  D.choice

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• 4If you stand here, you'll get a better________of the river.

  A.sight

  B.view

  C.scene

  D.scenery

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• 5One of the main __________ of the summit was “sustainable development”,or the question how we can continue developing the world without damaging the environment.

  A.headlines

  B.themes

  C.topics

  D.deadlines

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• 6Lab workers must wear protective ______.

  A.cloth

  B.dress

  C.clothing

  D.costume

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• 7When and where will it suit your ______ for our next meeting，Mr.Brown?

  A.satisfaction

  B.convenience

  C.need

  D.appointment

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• 8—Where did you spend last weekend? —At______.

  A.Mr Green's

  B.Mr Green

  C.the Green's

  D.the Mr Green

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• 9．Lily succeeded, for she had made the greatest _________ and got over plenty of difficulties.

  A.force

  B.strength

  C.effort

  D.energy

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• 10Always read the ________ on tile bottle carefully and take the right amount of medicine.

  A.explanations

  B.instructions

  C.descriptions

  D.introductions

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