CEFR Level B1 Reading test 3 – Snake Island. In order to improve your English skills to CEFR Level B1 and beyond, you need to practice as much as possible. In this section of our English course, you can test your reading skills with this text. Read the passage then answer the questions that follow. When you have completed the test, you will see how many answers where correct, and you will also see feedback on the right and wrong answers.