题目: 正丁烷2,3-C之间旋转所形成的构象有()种,其典型构象有()种。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0710/c7eb50f60b236fccef2284d5f79fd4fe.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:单项选择题 The young couple were quite excited by the ______ of having their first child.A. perspective B. prospect C. future D. foresight 查看答案