国家开放大学《理工英语4》单元自测参考答案 Unit 1 Fashionable Multimedia 边学边练 1.George cant remote control the costumers mobile phone. (X) 2.The charge of the download service is low. (X) 3.The Smart Tutor app will help the costumer to speed up his phone. (X) 4.The purpose of ...