Unit 1
1.younger
2. older
3. taller
4. shorter
5. longer
6. thinner
7. heavier
8. bigger
9. smaller
10. stronger
11. dinosaur
12. hall
13. metre
14. than
15. both
16. kilogram
17. countryside
18. lower
19. shadow
20. smarter
21. become
Unit 2
1. cleaned
2. stayed
3. washed
4. watched
5. had
6. slept
7. read
8. saw
9. last
10. yesterday
11. before
12. drank
13. show
14. magazine
15. better
16. faster
17. hotel
18. fixed
19. broken
20. lamp
21. loud
22. enjoy
23. stay
Unit3
1. went
2. camp
3. fish
4. road
5. hurt
6. ate
7. took
8. bought
9. gift
10. fell
11. off
12. Labour Day
13. mule
14. Turpan
15. could
16. till
17. beach
18. basket
19. part
20. licked
21. laughed
Unit4
1. dining hall
2. grass
3. gym
4. ago
5. cycling
6. ice-skate
7. badminton
8. star
9. easy
10. look up
11. Internet
12. different
13. active
14. race
15. nothing
16. thought
17. felt
18. cheetah
19. trip
20. woke
21. dream
迷你百科简约而不简单