【判断题】拟等位基因也称假等位基因,实质上就是非等位基因。
【简答题】6 A. A dog was barking all night I couldn’t sleep. B. A dog was barking all night, I couldn’t sleep. C. A dog was barking all night, so I couldn’t sleep.
【判断题】氯丁橡胶含有氯,极性大,耐老化、耐油,同时与顺丁橡胶相比,耐寒性也没有下降。
【单选题】So amused that I couldn’t help laughing when I saw the performance given by the children.
【判断题】开展加工贸易时,原料和成品的所有权均未发生转移。
【简答题】如何理解语言符号的线条性和符号系统的关系?