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單項選擇題

A baby might show fear of an unfamiliar adult,（）he is likely to smile and reach out to another infant.

A.if
B.wherever
C.so that
D.whereas

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單項選擇題

（）with the size of the whole earth, the highest mountains do not seem high at all.

A.If you compare
B.Compare them
C.When compared
D.A comparison

單項選擇題

It is useful to science（）the earth as an object in space.

A.to consider
B.which considers
C.considers
D.the consideration of

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