单项选择题
A.这九个单元的主题是如何培养政治演讲这一能力。 B.本书分为九个单元,内容涉及如何发展作政治演讲所需的各项能力。 C.这本书仅有九个单元,却解决了如何发展政治演讲这一能力的难题。 D.本书由九个单元组成,讨论的是如何培养作政治演讲所需的各项能力。
A.It uses modern science and technology. B.It may be difficult to seek the evidence. C.It contains a huge variety of activities. D.The law enforcement is weak in fighting against it.
A.their languages were difficult to understand B.the history of their languages was not long C.the sounds of their languages were very easy to understand D.their languages mainly contained rough and simple sounds