All types of water pollution are (harm)______to the health of humans and animals

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问题 All types of water pollution are (harm)______to the health of humans and animals.

选项

答案 Harmful

解析本题考查词性转换。be作为系动词，后需接形容词作表语，表状态。因此，空格处填harmful。

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A.naturalecosystemsB—whitepollutionC—waterandsoilerosi