_______ a small number of Australians are bitten by spiders each year, most recover without any medical treatment.
A．WhileB．UnlessC．WhenD．Because
A

試題分析：考查連詞辨析。A當(dāng)…時；然而；盡管；B除非；如果…不…;C當(dāng)…時；D因為；句意：盡管每年一些澳大利亞的人被蜘蛛咬了，但是大部分的人不吃藥都可以恢復(fù)了。根據(jù)句意說明A正確。本句的while表示盡管的意思。
點評：連詞的詞義辨析要放在上下文的語境中進(jìn)行，要注意上下文的語義的串聯(lián)以及邏輯關(guān)系的推理，特別要注意一些連詞和時間狀語的固定搭配。
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