Use this A2-B1 ESL science reading passage to learn why people blink. It includes key vocabulary, reading comprehension questions, and answers for English learners.Reading LevelA2-B1Word Count216 wordsReading PassageWe blink many times every minute. Most of the time, we do not think about it. Blinking happens so fast that we hardly notice it.To blink, the eyelids close and open again. This small..