As a defense against air-pollution damage, many plants and animals ______ a substance to absorb harmful chemicals.

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问题 As a defense against air-pollution damage, many plants and animals ______ a substance to absorb harmful chemicals.

选项 A、relieve
B、release
C、dismiss
D、discard

答案B

解析 本题考查动词辨析。根据空后的a substance to absorb harmful chemicals判断,植物和动物会释放或者产生一种物质。release(释放,放出,排放)符合语义,故为答案。relieve意为“缓和,缓解,减轻,解除”。dismiss意为“解散;解雇;让……离开;不再考虑”。discard意为“丢弃,抛弃”。句意:作为对空气污染损害的防御,许多植物和动物释放一种物质来吸收有害的化学物质。
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