In a toaster, _______ energy becomes heather gy.

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• 1At he beginning of the Games in the host country _______

  A.a torch is ignited at sunrise

  B.a lighted torch is brought into the stadium

  C.relays of runners light their torches in the stadium

  D.a torch is ignited by the Greek ambassador

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• 2The continuity of the Olympic Games_______.

  A.has never been broken

  B.was broken in the year A.D. 1200

  C.was interrupted for over 1,500 years

  D.was broken in 1896

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• 3Modern athletes’ results cannot be compared with those of the ancient runners because _______.

  A.the Greeks had no means of telling the time

  B.details such times were not recorded in the past

  C.they are much better

  D.the ancient runners fell down dead

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• 4The first Olympic Games took place_______.

  A.probably before 700

  B.C.B.over three thousand years agoC.in the seventh century A.D.D.a thousand years ago

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• 5According to the article, a document signed with a pencil _______

  A.will smudge badly

  B.will net last so long as one signed in ink

  C.will not hold up in court

  D.may be legal

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• 6Nuclear energy is a special sort of_____

  A.uranium

  B.chemical energy

  C.radiant energy

  D.electricity generated in atomic plants

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• 7We use the terms combustion and oxidation when we talk about _______.

  A.the energy of a moving object

  B.connecting a generator to a steam turbine

  C.nuclear fission

  D.fuels which give off heat when they burn

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• 8From the facts given in this article we can tell that _______

  A.often a form of energy is useless to us until it becomes another form

  B.steam power is cheaper and better than electrical power

  C.in the near future, there will be enough nuclear power to supply all our energy needs

  D.energy can change to another form, but the new form cannot change hack into the old form

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• 9Scientists expect that the atomic clocks will be_______.

  A.more durable

  B.indestructible

  C.more precise

  D.absolutely accurate

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• 10From the selection, we may assume that temperature changes _______

  A.affect only ammonia molecules

  B.may affect the vibration rate of atoms

  C.affect the speed at which atoms travel

  D.do not affect atoms in any way

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