题目: 无法投递的特快专递邮件在退回时应按()计收退回费。A.免于B.3元C.按回程D.按原资费 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1202/585350e4a1dd61aff0e76f68d2674165.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:选择题 He________ six symphonies by the time he was 20.[ ]A. wrote B. has writtenC. had written D. writes 查看答案