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【判断题】
大多数氨基酸在紫外-可见光区无吸收、无荧光特性,需将分离后的氨基酸衍生、转化为具有紫外-可见吸收或能产生荧光的物质才能检测。A.
正确
B.
错误
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举一反三
【单选题】Sheridan is considered usually as a great______writer.
A.
comedy
B.
tragedy
C.
essay
D.
short fiction
【简答题】微信这么好,为什么要选择免费?
【单选题】Readers will find that a library's collection of books usually ______ two categories: fiction and non-fiction.
A.
falls into
B.
runs into
C.
separates into
D.
turns into
【简答题】In terms of subject matter, “The Turn of the Screw” is a ___. A.ghost story B.science fiction C.romantic tale
【简答题】Reading comprehension. Many experts complain that media too often take advantage of the science fiction aspects of nanotech (纳 米技术). Reports of nanotech often refer to K. Eric Drexler's book Engines o...
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