“Welcome everyone. We are glad to have such a group of students visiting us.We are sure the exchange of views among us will promote the friendly relationship between China and America. I hope you will enjoyyour stay in China, make new friends and take away memories of pleasant, productive days. After your visit,we sincerely hope you will give us your valuable suggestions.” 蔚澜面无表情,毫无感情地背出她事先准备好的欢迎词。至于她为何面无表情,外加毫无感情,是因为……