单项选择题

Which of the following is physically the largest nation in the United Kingdom

A．England.
B．Scotland.
C．Wales.
D．Northern Ireland.
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单项选择题
The modern English began in the ______ century.
A．14th
B．15th
C．16th
D．17th
单项选择题
According to the passage, which of the following is characteristic of enzymatic glycosylation of proteins
A．AGE’s are formed after a period of months or years.
B．Proteins affected by the process are made unstable.
C．Glucose attachment impairs and stiffens tissues.
D．Glucose is attached to proteins for specific purposes.
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