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【单选题】
维生素C可用于预防和治疗坏血病等，其结构式如图所示。 下列关于维生素C的叙述错误的是A.
维生素C的化学式为C 6 H 8 O 6
B.
维生素C不能作食品添加剂
C.
维生素C可发生水解反应
D.
维生素C能发生氧化反应
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【简答题】The New York Police Department (NYPD) announced it will form a new unit to search social media as part of the combined efforts against criminals. This is an official 1)____to criminals growing use of ...
【单选题】''Forbidden fruit' temptation' means______.
A.
the criminals would like to take chances
B.
people are tempted to try the commercial vices
C.
people are tempted to bootleg drugs, etc
D.
the practitioners would like to join Mafia
【简答题】正投影法是投射线与投影面 的平行 投影法。
【简答题】正投影法是投射线与投影面( )的( )投影法。
【单选题】听力原文： It used to be that mentally retarded children were treated like criminals, nor was there any distinction made between the mentally retarded and the insane. Both were simply locked away in instit...
A.
Kindly.
B.
Badly.
C.
Like dogs.
D.
Like criminals.
【简答题】Some people don't like the() of using fingerprints because they associate them with criminals
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