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【单选题】
淀粉和纤维素分子中的主要糖苷键分别是( )A.
α-1,4、α-1,4
B.
α-1,4、β-1,4
C.
β-1,4、α-1,4
D.
β-1,4、β-1,4
E.
α-1,4、β-1,6
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反馈参考答案：
举一反三
【单选题】What does the man say he will do?
A.
Review the applicants' files
B.
Reschedule the appointment
C.
Purchase recording equipment
D.
Record the interviews
【单选题】Johan didn’t review（复习） the lesson, ___ he couldn’t answer the teacher’s question.
A.
as a result
B.
such as
C.
because of
D.
as well as
【单选题】Why does the professor mention the 'free-rider' problem?
A.
To review a concept he explained in class
B.
To give the student a plan to solve her problem
C.
To clarify the problem the student is facing
D.
To explain a benefit of working in groups
【单选题】下列关于导游人员在旅游车上讲解的要领中，错误的是()。
A.
尽量不错过城市的重要景观
B.
讲解内容与车外景物相呼应
C.
学会使用“触景生情法”
D.
多让游客自己去欣赏
【单选题】(2013·湖南高考)He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
A.
wouldn't
B.
shouldn't
C.
couldn't
D.
mustn't
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