【简答题】Silk production has a long and colourful history unknown to most people. Scientific discoveries have shown that silk production existed in China from around 2500 B.C., although it could be much older....
【单选题】We regret to report that a consignment of silk piece goods () Order No. 567 has not been delivered.
【简答题】无线传感网络系统通常包括()、汇聚节点和管理节点
【判断题】Silk has high resiliency.
【单选题】I like this silk dress, and it _______ so soft and comfortable. [ ]
【单选题】Cave exploration, which has come to be known in recent years, is a ________ new sport. [ ]