VOA慢速英语:PISA最新成绩发布 中国重返第一

achievement – n. something that has been done or achieved through effort : a result of hard work

score – n. the number of points, goals, runs, etc., that each player or team has in a game or contest

average - adj. a level that is typical of a group, class, or series : a middle point between extremes

randomly – adv. chosen or done without a particular plan or pattern

background – n. the experiences, knowledge and education in a person's past

fine-tune – v. to make small changes to something to improve the way it works to make it just right

focus – n. a subject that is being discussed or studied : the subject on which people's attention is focused — usually singular

disadvantaged – adj. lacking the things—like money and education-- that are considered necessary for an equal position in society

quarter – n. one of four equal parts of something

red flag – n. a warning sign

mediocre – adj. not very good