【单选题】Despite his great efforts,he ______unsuccessfully after all.
【单选题】The chapter ended with the hero in the precarious position of hanging from a cliff.
【单选题】上饶师范学院图书馆图书分类的基本方法是 ?
【单选题】()一般采用PCM作为传输手段,一般为PCM30/32。
【单选题】The chapter ended with the hero in the precarious position of hanging from a cliff.