general knowledge 15

Test # 15

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The 'Crimean Tatars' or Crimeans who are in news in 2014, are a Muslim ethnic group native to which country?

Your hearing is better when you are hungry than when you've just eaten.      .. More >>

peyton rous:
1.United States pathologist who discovered viruses that cause tumors (1879-1970)      .. More >>

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Using and in a negative sentence instead of or

Don't Say:
I don't like red and orange. I want the blue one.

I don't like red or orange, I want the blue one.

If we join clauses with different subjects we use and even after a negative. He didn't write to me and I was worned. The meaning of the first sentence is that you don't like tne two colours together. The intended meaning is that you don't like either of them even separately.
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