单选题
According to the passage, what is the major driving force behind the progress toward more literacy?______
A、
The amount of education
B、
The availability of reading materials
C、
The economic development
D、
The necessity to read
【正确答案】
D
【答案解析】
第二段第一句指出,在这些因素中,用途是最关键的。与(D)“阅读的必要性”相符。
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