下列哪个表述是用来形容“每四年一次的”?( ) A: biannual B: annual C: biennial D: quadrennial
下列哪个表述是用来形容“每四年一次的”?( ) A: biannual B: annual C: biennial D: quadrennial
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下列哪个表述是用来形容“每四年一次的”?( ) A: biannual B: annual C: biennial D: quadrennial