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【单选题】
放电时，硫酸分解成（）A.
氢气和水
B.
氢气和硫酸根
C.
氢离子和硫酸根
D.
硫酸根
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【简答题】with all things considered I think, o , I prefer the new operating system.
【简答题】Last Friday my friend Deborah asked me if I would like to learn how to make tofu. I couldn’t think of any good reason not to be interested in, so I said, 'Yes'. The next day I met her and another thre...
【单选题】利用PubMed主题途径加权检索“肺肿瘤的治疗”正确的检索策略是( )
A.
Lung Neoplasms/therapy [Mesh]
B.
Lung Neoplasms AND therapy
C.
Lung Neoplasms/therapy [Majr]
D.
Lung Neoplasms AND therapy[TI]
【单选题】——How about calling on many _____ volunteer to help those trapped in Yushu county? ——I can't think of ________ better idea.
A.
a ; /
B.
/, a
C.
a ; a
D.
/; /
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