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

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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