It’sreportedthatvaccines(疫苗)fo

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--- It’s reported that vaccines(疫苗) for H7N9 bird flu may hit the market as early as May.
--- Really? If so, we _____ depend on those from abroad.

A．mustn’t

B．can’t

C．shouldn’t

D．needn’t

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_______carefully you write, _______ mistakes you’ll make.

A．The more, the fewer	B．The less, the fewer
C．The less, the more	D．The more, the less

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How happy we wereeach other ！

A．to see

B．seeing

C．saw

D．have seen

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—Sorry, I made a mistake again.
—________. Practice more and you will succeed.

A．That’s all right	B．That’s right.
C．Not at all	D．It’s a pleasure.

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________ is difficult if you put your heart into it.

A．Anything

B．Nothing

C．Something

D．Everything

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The man became a famous writer when he was ________.

A．in his fifty

B．in his fifties

C．in fifty years old

D．in fifties

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