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【单选题】
普通分析用水pH应在（）A.
5～6
B.
5～6.5
C.
5～7.0
D.
5.0～7.5
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【简答题】_________________仅是北宋第一个专力写词的作家，还是北宋创新词调最多的词人，第一个大量创作“慢词”的词人。
【简答题】蛋白质分子中氨基酸之间是通过 连接的
【单选题】----When and where was David born? ----He was born ____ New York ____ 1998.
A.
on , in
B.
on, in
C.
in, in
D.
in , at
【简答题】C Arthur Miller was born in New York City in 1915. He died in 2005 at his home in Roxbury, Connecticut. For sixty years, he created one dramatic work after another. Miller won many awards for his play...
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