Since the earthquake hit Japan,polluted air and water has been a r------------to public health.根据首字母填空

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SincetheearthquakehitJapan,pollutedairandwaterhasbeenar------------topublichealth.根据首字母填空Sincetheear

Since the earthquake hit Japan,polluted air and water has been a r------------to public health.根据首字母填空
Since the earthquake hit Japan,polluted air and water has been a r------------to public health.
根据首字母填空

Since the earthquake hit Japan,polluted air and water has been a r------------to public health.根据首字母填空
risk

Since the earthquake hit Japan,polluted air and water has been a risk------------to public health

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