We are all aware _________ the many threats _________ the environment and we need to take action to prevent us from the bad consequences.
A．of; toB．of; onC．that; toD．that; on
A

試題分析：句意：我們都知道許多對環(huán)境的威脅，我們需要采取行動(dòng)來阻止我們的不良后果。be aware of .知道; 意識(shí)到;many threats to …諸多對……的威脅。如：many threats to economic growth諸多經(jīng)濟(jì)增長的威脅。
考點(diǎn): 考查介詞搭配的用法。
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