Chinese people are now enjoying better dental heath, as shown by the declining______ of tooth decay.

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问题 Chinese people are now enjoying better dental heath, as shown by the declining______ of tooth decay.

选项 A、incidence
B、treatment
C、consequence
D、misfortune

答案A

解析 incident事件,事故:treatment治疗;consequence结果,后果;misfortune不幸,厄运。根据句子意思应该是减少蛀牙的事件,故答案选A。
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