选词填空:将radius, radium, radiate放到合适的位置,完成句子。
He has visited every shop within a ____ of two miles.
_______can be used to treat cancer.
The sun _____ light and heat.
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选词填空:将radius, radium, radiate放到合适的位置,完成句子。
He has visited every shop within a ____ of two miles.
_______can be used to treat cancer.
The sun _____ light and heat.