英语 obtainMold's cannot produce their own food_their nourishment from living on deada)but obtain b)to obtain c)obtain d)obtaining

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英语obtainMold''scannotproducetheirownfood_theirnourishmentfromlivingondeada)butobtainb)toobtainc)obtai

英语 obtainMold's cannot produce their own food_their nourishment from living on deada)but obtain b)to obtain c)obtain d)obtaining
英语 obtain
Mold's cannot produce their own food_their nourishment from living on dead
a)but obtain b)to obtain c)obtain d)obtaining

英语 obtainMold's cannot produce their own food_their nourishment from living on deada)but obtain b)to obtain c)obtain d)obtaining
选d)
“their nourishment from living on dead”做状语(注意不是状语从句),前面只能填一个非谓语动词(不定式、动词ing、过去分词,不定式表尚未实现的动作,obtaining表伴随、方式等,过去分词表已完成或被动,综合考虑应选择d)obtaining

D

D 表原因