8．The yearly output of theportable（便攜式的））computers in the factory reaches up to 50，000．

分析 這家工廠的手提電腦年產(chǎn)量達50000臺．

解答 答案portable．
考查形容詞．根據(jù)所給的漢語提示"便攜式的"和空后的名詞computers可知，此處應(yīng)用形容詞portable修飾名詞computers，故填portable．

點評 形容詞是中學英語的重要語法，解題時首先要根據(jù)語境和邏輯來推斷出空所需要的詞的形式，然后根據(jù)所給的漢語提示寫出正確的答案．

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