单选题：You would be ___ a risk to let your child go to school by hi

题目内容：

You would be ___ a risk to let your child go to school by himself． A．omitting
B．attaching
C．affording
D．running

参考答案：

答案解析：

Great as Newton was，many of his ideas ________ today and are

Great as Newton was，many of his ideas ________ today and are being modified by t

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