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A. moderate
B. average
C. lower
D. higher

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A. Space
B. Sky
C. Land
D. Earth

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A. through
B. as
C. to
D. like

We consume more energy than we can produce.

A. waste
B. buy
C. use
D. sell

Boston used to be famous for its shipbuilding

A. rich
B. poor
C. well-known
D. bad

Hypnosis is not effective in treating cigarette smokers and persons who eat or drink too much is because ______.

It is possible for eye surgeons to operate by passing a laser been through the ______.

For all being unrecognized among users, Aspirin ______.

There is a prostaglandin ______

Numerous studies concluded ______