We should protect the environment, for plenty of fresh air ________ to good health.
A．a(chǎn)djustB．contributesC．distributesD．a(chǎn)ttributes
B
詞義辨析. A.調(diào)整;適應  B.貢獻;出力  C.分配;散布  D.認為……屬于。根據(jù)題意，我們應該保護環(huán)境，因為大量的新鮮空氣有助于身體健康。故選B。contribute to有助于……。
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