The main manifestations of learning difficulties are the following: 1. Patients have poor academic performance, spend a lot of time and effort when learning, but do not have good learning results, such as the final exam results are always poor, or even belong to the bottom of the class. 2. Some people with learning difficulties appear to be unable to concentrate, especially in class is always easy to lose concentration, make small movements, and people The company’s main business is to provide a wide range of products and services, such as the Internet, the Internet, and the Internet.