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單項(xiàng)選擇題

Selecting a mobile phone for personal use is no easy task because technology（）so rapidly.

A.is changing
B.has been changed
C.will have changed
D.will change

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Professor White contributed a lot to our community,（）

A.teaching, writing, and lecturing
B.teaching, writing, and a lecturer
C.a teacher, a writer, and lecturing
D.teaching, lecturing, and a writer

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Professor Smith promised to look（）my paper, that is, to read it carefully before the thesis defense.

A.after
B.over
C.on
D.into

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