Materials

Doctors in Tokyo
led the research. It examined more than four thousand people who had suffered
cardiac arrest.
[ˈdɑktərz] [ɪn] [ˈtoʊkiˌoʊ]
[lɛd] [ðə] [riˈsɜrʧ]. [ɪt] [ɪgˈzæmənd] [mɔr] [ðən] [fɔr] [ˈθaʊzənd] [ˈpipəl] [hu] [həd] [ˈsʌfərd]
[ˈkɑrdiˌæk] [əˈrɛst].

Facts

Comments

一个月的学习时间又过去一半了！然而，还是没能把自己的积极性调动起来！

Hours

1h.