How many ______ known altogether?

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问题 How many ______ known altogether?

选项 A、species of fishes are
B、species of fish is
C、specieses of fish are
D、species of fish are

答案D

解析 species单复数形式相同，不存在specieses的形式。本句中从意思上判断应为复数，因此后面的动词应用are。而fish通常也没有复数形式变化，虽然有fishes的形式存在，但它只在强调各种不同种类的鱼时才用，如：to。 eat two fish(吃两条鱼)，to catch a lot of fishes(捕到多种鱼)。

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专业英语四级

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How many ______ known altogether?

专业英语四级

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