单项选择题

The most obvious and rapid change in the development of a language takes place in the area of ______.

A．pronunciation
B．vocabulary
C．grammar
D．speech
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单项选择题
The English Renaissance period was an age of ______.
A．poetry and drama
B．drama and novel
C．novel and poetry
D．romance and poetry
单项选择题
The main purpose of the passage is to ______.
A．predict the future of medical care
B．describe a health check-up device
C．show the superior health care system of Sweden
D．warn about the dangers of undetected diseases
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