—What’s the best way to ____ the disease caused by biting insects?
——Ah, don’ t bite any!
A．protectB．preventC．keepD．kill
B
詞義辨析。  A．保護(hù)；警戒   B．預(yù)防；阻止   C．保持 D．殺死。句意：預(yù)防昆蟲叮咬引起的疾病的最好的方法是什么？故選B。
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