general knowledge 242

Test # 242

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1.
How many years ago had occurred the K-T extinction event,(Recently (in year 2010) 41 scientists published a paper in "Science" affirming that it was a consequence of asteroid impact).?


An average American child watches approximately 28 hours of television in one week      .. More >>

hakea lissosperma:
n.
1.shrub with pungent rigid needle-shaped leaves and white flowers      .. More >>

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All not used instead of Not all

Don't Say:
All people are not hard-working.

Say:
Not all people are hard-working.

Note:
Similarly, Everybody doesn't like dancing should be Not evorybody likes dancing. The first sentence is wrong because it makes all people lazy.
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