11. SLA can incorporate heritage language learning , but it does not usually incorporate bilingualism. 12. There are advantages and disadvantages when integrating IT and language learning . 13. Measurements of language learning aptitude are used in many different ways. 14. Early language learning is severely impacted if social interaction is limited or absent. 15. Stevick was influential in developing the communicative approach to language learning . 16. It is thorough and integrated, providing a complete language learning experience. 17. The purposes of second language learning are often different from foreign language learning . 18. The software on each computer is especially designed for language learning . 19. There are other benefits to participating in a language learning exchange. 20. An interactive, social environment is crucial for language learning and development.