14．In fact，it is money-saving to buy shoes of high quality，_____ they will last longer．（　�。�
A．asB．whileC．thoughD．if

分析 事實(shí)上，買質(zhì)量好的鞋子是一種省錢的方法，因?yàn)檫@樣的鞋子經(jīng)久耐用．

解答 答案：A
題干中they will last longer是解釋原因；as因?yàn)�，while然而，though盡管，if如果．故選A．

點(diǎn)評 從屬連詞是連詞的一種，用來引導(dǎo)名詞性從句和狀語從句．大致可分為三大類：that（無詞義，不做成分）if，whether （表達(dá)是否的意義，但不做句子成分）； 連接代詞：who，whom，whose，what，which，whatever，whoever，whichever（有詞義，在句子中可作主語、表語、賓語）；連接副詞：when，where，why，how，how many，how long，how far，however，whenever，wherever （有詞義，作從句的狀語）．學(xué)習(xí)時(shí)，要注意區(qū)分和掌握．

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