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精英家教網 > 高中英語 > 題目詳情
It makes _______ big difference to keep calm when giving _______ first aid.
A．a, /B．/, theC．a, theD．/,a
A

試題分析：考查冠詞。第一個空是固定短語make a big difference “起重要作用”。第二個空也是固定短語first aid“急救”不用冠詞。句意：當實施急救時保持鎮(zhèn)靜很重要。所以答案選A。
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