सरसरी तौर पर पढ़ना (Skimming) और बारीकी से पढ़ना (Scanning) किस भाषा कौशल से संबंधित उप-कौशल हैं?

The development of reading and writing skills:

'Listening and speaking are primary skills, while reading and writing are secondary skills.' This statement refers to which principle?

Asking a student to read a poem primarily aims to test which skill?