The medical lobby answered irrelevant questions and did not respond.

There are the following situations. First, if you do the questions online, you need to finish all the questions and click Submit and Upload to be successful. After submission, there will be no homework as soon as the homework comes, and you can't see the homework answer until you correct it. Second, the network is not good, the network is disconnected or the card is refreshed; Third, you haven't done anything for a long time, and your account automatically goes offline. It is recommended to check the login status. Medical lecture hall is a mobile learning professional platform for medical education in China, which was built by China Medical Science and Technology Publishing House. Based on paper books, the platform integrates e-books, high-quality teaching resources and teaching management services, including video, PPT, audio, various documents and exercises. The platform provides personalized, all-round and collaborative teaching support for teachers and students, which enables teachers' teaching and students' learning to break through the limitations of time and space, and at the same time uses big data to comprehensively track the learning process.