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【单选题】
补体激活的经典途径中,其补体成分的激活顺序是( )。A.
C1→C5→C3→C4→C2→C6→C7→C8→C9
B.
C1→C2→C4→C3→C5→C6→C7→C8→C9
C.
C1→C4→C5→C2→C3→C6→C7→C8→C9
D.
C1→C2→C3→C4→C5→C6→C7→C8→C9
E.
C1→C4→C2→C3→C5→C6→C7→C8→C9
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【单选题】The entire process is called the greenhouse effect, and most of it is caused by the prevalent greenhouse gas, water vapor.
A.
predominant
B.
executive
C.
superior
D.
remarkable
【单选题】What is true of sleepwalking according to the passage?
A.
It is caused by emotional conflict or guilty conscience.
B.
It is the acting out of a vivid dream.
C.
Somnambulists are asleep during their sleepwalking.
D.
It is dangerous to waken a sleepwalker.
【简答题】根据中文，在下面的横线上填上正确的单词或者句子，将意思补充完整。Ladies and gentelmen! _______________，please! 女士们，先生们，请注意！
【简答题】根据所给句子的意思及中文提示写出正确的单词，每空一词。 1. —When will our school sports meeting be held? —It will be held on _______ (五月) tenth. 2. English is widely _______ (说) all over the world. 3. Wei Hua is one of the _____...
【简答题】在制表位对话框中，______。 A) 只能清除特殊制表符 B) 只能设置特殊制表符 C) 既可设置又可清除特殊制表符 D) 不能清除特殊制表符
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