No one knows ______ the task will last. What a pity!
A．how longB．how oftenC．how farD．how much
A

試題分析：A. how long多長時(shí)間    B. how often多久一次  C. how far多遠(yuǎn)的距離          D. how much多少，修飾不可數(shù)名詞；句意：沒有人知道這個(gè)任務(wù)將持續(xù)多長時(shí)間。好可惜啊!故選A
點(diǎn)評：詞義辨析考的是學(xué)生的基礎(chǔ)詞匯知識，了解每個(gè)選項(xiàng)的含義是做好此類題型的關(guān)鍵，解答此類習(xí)題，首先要求學(xué)生有一定的詞匯量，句意理解后便可作答，所以平時(shí)的基礎(chǔ)知識記憶，詞匯積累是解答好這種題的關(guān)鍵。
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