成人英语三级

单选题 Citizens in this country are now enjoying better dental health, as shown by the declining incidence of tooth__________．

A．care
B．decay
C．growth
D．reflection

参考答案：B进入在线模考
【参考译文】从龋齿发生率的降低来看，这个国家的人现在牙齿健康状况较好。
【答案解析】本题考查句意的理解和单词的辨析。tooth care，关爱牙齿；tooth decay，龋齿；tooth growth，长牙；tooth reflection为不恰当的搭配。文中的decline指“下降”，能够显示出人们的牙齿健康状况更好，那就应该是龋齿发生的比率降低了，所以结合句意，答案选B。

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