单项选择题

Questions 17～20 are based on the following talk. You now have 20 seconds to read Questions 17～20.
What is the difference of the language of a child of four from that of his parents

A．The vowel sounds.
B．The grammar.
C．The style.
D．The vocabulary.
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The school became Canterbury Agricultural College of the University of New Zealand in 1896.
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