A familiar conclusion seems
irresistible
: without an ability to protect their creations against theft, creators will be unable to earn an adequate living.
Many questions about estrogen's effects remain to be
elucidated
, and investigations are seeking answers through ongoing laboratory and clinical studies.
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BSection A/B
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Helicopters rushed to where Shenzhou 5______for the rescue of China's first astronaut.
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Through live television, the world is now able to
witness
historical events as they happen.
He may give the impression of being severe, but he is quite a kind person______.
Both ancient and modern sources leave wide
latitude
not only for understanding the complex origins of pain but for seeking clues to help deal with them.
Most organisms must
fit in with
their surroundings because their skills to alter their environment are restricted and highly specialized.
Obesity is a condition perpetuated by a
diversity
of factors.
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______is not only the health of humans but that of the earth.
The Chukchi of the Siberian Arctic
bred
reindeer as a source of food.
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The______was that, if you had to abandon ship and had time to put on a dry suit, it would be an excellent aid to self-preservation.