________ too much exposure to wind may cause the dryness of skin, so too much ex

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________ too much exposure to wind may cause the

dryness of skin, so too much exposure t

o the sun may result in cancer.
a. Just as b. While c. If d. Now that

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举一反三

A foreigner"s first impression of the U.S. is likely to be ________ everyone is in a hurry ---- often under pressure.
a. what b. that c. which d. one in which

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I’m sure you ______ to us just now, because we already know the truth.

A．lay

B．laid

C．lie

D．lied

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Children are always ______, and usually think differently from adults.

A．satisfied

B．social

C．untrue

D．creative

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Steel and iron can be used ______ bridges as well as machines.

A．to make

B．to making

C．make

D．making

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Let Harry play with your toys ______, Clare. You must learn to share.

A．at last

B．in secret

C．after all

D．as well

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