1969年Whittaker的五界系统是__原核生物界______,___原生生物界________, ___真菌界_____, ______植物界______, ___动物界______
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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