【題目】In the forest, sound is the best means of communication over distance ________ in comparison with light, it won't be blocked by trees when travelling.

A. while B. because

C. when D. though

【答案】B

【解析】

考查連詞辨析。句意:在森林中,聲音是最好的遠距離交流方式,因為與光相比,它不會被樹木阻擋。A. while雖然,然而;B. because因為;C. when時;D. though雖然,盡管。此處表示原因,故選B.

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