—___________ waste of time it is to watch ___________ ads on TV!

— I agree with you.

A.What；the number of B.What a；a number of

C.What a；a great deal of D.What；a number of

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—________?

—At six o'clock.

A.When do they get up B.What do they want to buy

C.Where do they play D.How do they learn English

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He found ________ impossible_______ the work on time.

A./; finish B.it;finish C.that; to finish D.it; to finish

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If you dropped a piece of fruit on your computer keyboard, would you think about eating it again? What if you dropped it in the toilet? Bacteria(細(xì)菌) can live everywhere, even in some unexpected places.

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Here are some other places to watch out for:

At home

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Escalator handrails(電梯扶手), shopping cart handles(推車手柄), public books and magazines are top bacteria carriers. That’s why the first thing to do when getting home is to wash your hands.

Yes, bacteria are everywhere. But don’t be too afraid to touch those things. Most of bacteria are harmless. Just remember to wash your hands regularly. It is the most useful way to protect yourself from bacteria and viruses.

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5.How can you protect yourself from bacteria and viruses? _________________________________ .

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---How do you like the story?

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