ztm#1bfc49d6819e49ab062d2a9d3da66513
0
minutes
00:00
退出练习
提交答案
PART0:
Those who oppose water fluoridation claim that it not only poses serious health risks, especially to children,
and also has engendered
a number of bioethical dilemmas.
点击录音按钮开始答题
录音ing
重新录音
我的答案：
2'34"
为了能够顺利完成录音，建议使用Chrome浏览器
