题目内容

Tom got ill, ___ he still attended the important meeting.

A. so
B. because
C. but
D. nor

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I enjoy the popular dance "hip-hop", but ___ my father ___ my mother likes it.

A. both; and
B. not only; but also
C. either; or
D. Neither; nor

Forests help to keep water from running away, _____ drought does not often happen.

A. and
B. but
C. so
D. though

I am looking for a baby-sitter. she must be _____ too old too_____ young.

A. neither; nor
B. both; and
C. either; or
D. not only; but also

酸性介质中,S2O82–具有强氧化性,当催化剂硝酸银存在时,过二硫酸根可更快的将Mn(II)氧化成( )

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