单项选择题

Pluto goes around the sun once in 248 years, if we（）the earth's year（）. a standard.

A. take; as
B. take; for
C. take; in
D. take up; for

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单项选择题
In this chapter we will（）the magnetic effects of the electric current.

A. deal with
B. deal in
C. trade with
D. drop in
单项选择题
We cannot expect her to do the homework（）look after the children.

A. as well
B. so well
C. as well as
D. so as
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