Itissaidthatsixtypercentofalle

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It is said that sixty percent of all energy ________ in the world today is being lost as waste heat.

A．produced	B．producing
C．to produce	D．having produced

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Social attention should be paid ____ our earth from ____.

A．to preventing; being polluted	B．to prevent; polluting
C．to prevent; being polluted	D．to preventing; polluted

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–It’s hard for me to go to sleep.
–Try to ____ the amount of coffee you drink during the day.

A．cut up

B．cut in

C．cut down

D．cut off

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There was a big fire in the building last night. ____, all the people were able to escape.

A．Unluckily

B．Fortunately

C．To be sure

D．Above all

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You must try some of her home-made wine and it’s quite ____ experience! I know from ____ experience it is very good.

A．the; the

B．an; an

C．an; /

D．/;an

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There ____ a terrible accident then, ____ three passengers were killed and twenty were injured as well.

A．was occurred; which	B．was occurred; in which
C．occurred; which	D．occurred; in which

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