15．This is actually a veryentertaining（entertain） book telling people serious health messages．

分析 這確實(shí)是一本告訴人們嚴(yán)重的健康信息的有趣的書．

解答 答案是entertaining．本題考查語境中選用所給詞的恰當(dāng)形式；entertain vt．娛樂；entertaining adj．有趣的，娛樂的； a entertaining book一本有趣的書；故答案是entertaining．

點(diǎn)評(píng) 本題是要求用所給動(dòng)詞的適當(dāng)形式填空，解題時(shí)首先考慮句中需要的是謂語動(dòng)詞還是非謂語動(dòng)詞；其次，如果是謂語動(dòng)詞關(guān)注時(shí)態(tài)、語態(tài)和數(shù)的變化；如果是非謂語動(dòng)詞要聯(lián)系非謂語的基本用法判斷非謂語的形式．

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