How can they learn anything ______ they spend all their spare time watching television?
A．whenB．thoughC．whileD．before
A

試題分析：考察連詞辨析。A當(dāng)…時；既然；B盡管，即使；C當(dāng)…時；然而；D在…之前；句意：既然他們已經(jīng)把所有的空閑時間都花在了看電視上，他們又怎么能夠?qū)W到知識呢？根據(jù)句意本句中的when表示“既然”；故A正確。
點(diǎn)評：此題主要考查連詞的辨析，選擇連詞主要是看前后句的關(guān)系，因果關(guān)系用表因果的連詞，轉(zhuǎn)折關(guān)系用轉(zhuǎn)折連詞，并列關(guān)系用并列連詞，要求考生具有一定的句子分析能力和詞義辨析能力。
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