必修三以及必修四材料
Warming up1. achievement n. ⑴[U]完成; 达到; 成功 a great sense of achievement We felt _____________________________(一种 巨大的成功感)when we reached the top of the mountain. ⑵[C]成就, 成绩 He has broken two world records in one day, which is quite an achievement _________________________________! 这真是了不起的成绩.