Burden of Proof (Penguin Readers (Graded Readers)) - Tapa blanda

This is a series of simplified stories, designed as an introduction to literature. The series offers classics, best-sellers, film-titles and original stories. Each book has extensive exercises, a detailed introduction and information about the syllabus. They are published at six levels: level 1 - beginner (300 words); level 2 - elementary (500 words); level 3 - pre-intermediate (1050 words); level 4 - intermediate ( 1650 words); level 5 - upper intermediate (2300 words); level 6 - advanced (3000 words). The series is designed to be suitable for students of English as a foreign language, for students of English as a second language and for reluctant readers.