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【单选题】
蛋白质最大的紫外光吸收波长是( )A.
100nm
B.
240nm
C.
260nm
D.
280nm
E.
520nm
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举一反三
【单选题】She leaned________the wall while she was speaking to her friend.
A.
To
B.
against
C.
towards
D.
for
【简答题】线切割机床属于数控（）加工机床之一。
【简答题】1.She looked forward
every spring to_____ the flower-lined
garden.A.visit B.paying a visit C.walk in D.walking in
【单选题】The stranger, alone and______in thought, leaned lightly against one of the columns that supported the roof.
A.
abandoned
B.
absorbed
C.
abolished
D.
accorded
【简答题】At the meeting, she leaned forward c________ (悄悄地) and lowered her voice to whisper to me so that others couldn't overhear.
【简答题】A．stepped in B．settled down C．leaned over D．turned out
【简答题】利用亚马逊搜索算法提高排名和利润的方法。第一个方法是使用优惠折扣码,第二个方法是____。
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