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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单项选择题If the hypothesis stated at the end of the passage is true, it can be inferred that the crystallin proteins in the lenses of people with cataracts _______.

A．have increased elasticity
B．do not respond to enzymatic glycosylation
C．are at least several months old
D．respond more acutely than other proteins to changes in moisture levels

单项选择题Apples are used _______.

A．in order to convince the reader that fruit has no intellect
B．to illustrate the subject of the passage
C．to give color to the story
D．to show how foolish logic is

单项选择题Which of the following would be the best title for the passage

A．Discovering the Natural Laws of Apples.
B．The Use of Induction.
C．Experimental Verification as an Adjunct to Reasoning.
D．The Logic of Everyday Reasoning.

单项选择题The author has the approach of a (n) _______.

A．scientist
B．artist
C．novelist
D．economist

单项选择题The underlined term natural law as it appears in the middle of the second paragraph refers to _______.

A．common sense
B．the "honor system"
C．the result of an induction
D．the order of nature