[解析] for与文章第1段第3句中的“because we depend...”构成呼应，均表示解释原因。-找考题网

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单项选择题A．Because pupils there have to spend most of the time studying.B．Because the school authorities insist on traditional ways of teaching.C．Because the school authorities have neglected discipline.D．Because pupils there are too fond of playing.

A．Because pupils there have to spend most of the time studying.
B．Because the school authorities insist on traditional ways of teaching.
C．Because the school authorities have neglected discipline.
D．Because pupils there are too fond of playing.

单项选择题A．Archaeological.B．Biological.C．Meteorological.D．Sociological.

A．Archaeological.
B．Biological.
C．Meteorological.
D．Sociological.