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Prices of daily goods ___________ through a computer can be lower than store prices.
A．a(chǎn)re boughtB．boughtC．been boughtD．buying
B 

試題分析：句意：通過電腦買的日常商品的價(jià)格要比在商店買的價(jià)格低。這里需要非謂語動(dòng)詞做定語修飾goods，因?yàn)間oods和buy是被動(dòng)關(guān)系，用過去分詞做定語，所以選B。
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