问答题Cell phones are now essential to millions of people as a convenient form of communication. The following chart shows the use of cell phones over the past years. Study the following chart carefully and write an essay in which you should 1) analyze the chart, and 2) give your comments on the trend. In your essay, make full use of the information provided in the pictures printed below. You should write about 160-200 words neatly on ANSWER SHEET 2.

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单项选择题40().

A．illustrated
B．proposed
C．hypothesized
D．inferred

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