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【单选题】
下列有关单体脱水缩合形成多聚体的过程的说法,错误的是( )A.
磷酸与五碳糖可以为形成水提供氢元素
B.
羧基与氨基可以为形成水提供氧与氢元素
C.
麦芽糖是由两分子葡萄糖脱水缩合而成
D.
核苷酸进行脱水缩合形成的化学键为肽键
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举一反三
【单选题】Mr. Smith asked Nancy ____ it took her to fly to New York. [ ]
A.
how soon
B.
how often
C.
how long
D.
how far
【单选题】—Mr. Jiang, long time no see. How are you? —Fine, thanks. How are you______your teaching?
A.
getting well with
B.
getting across
C.
getting together
D.
getting on with
【单选题】—______will Mr. Green be back ? —In a week, I think .
A.
How often
B.
How many
C.
How soon
D.
How long
【简答题】How long has Mr. Wang been here?
【简答题】How long is the paid education leave that Mr. Chang plans to have?
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