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第1题

They may not consume enough iron-rich food, and are _____ to experience a deficiency.
· reliable
· advisable
·
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第2题

Which of the following is TRUE( )
· If things are very small, they are germs.
· If things can’t be seen, they must
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第3题

What is a microscope used for( )
· Making very small things look much bigger.
· Making very big things look much s
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第4题

Why don’t your parents let you drink dirty water( )
· You haven’t looked at it carefully.
· Water can’t be drunk i
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