6．In the new curriculum，some courses are        ，while others are optional for middle school students．（　�。�
A．traditionalB．compulsoryC．impressiveD．significant

分析 在新課程中，一些課程是必修的，而其它的是供中學(xué)生選修．

解答 答案是B．本題考查形容詞詞義辨析．A項traditional表示"傳統(tǒng)的"；B項compulsory表示"強(qiáng)制的，必修的"；C項impressive表示"印象深刻的"；D項significant表示"重要的"；題干中optional表示"可供選擇的；選修的"；optional 和compulsory是一組反義詞，所以本題選擇B，表示"必修的"．

點評 辨析形容詞要在識記常見形容詞及其搭配的基礎(chǔ)上理解語境，根據(jù)具體語境推斷合理的答案．

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