Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
score(s) – n. the number of points that someone gets for correct answers on a test or exam
beyond – prep. more than something
neurodegenerative – adj. causing the brain or nerves to become weaker or less able to function as time passes
mortality – n. the death of a person or animal
bellwether – n. someone or something that leads others or shows what will happen in the future
