第15篇
Part 1
第一组
1. inventor
2. invent
3. recognize
4. invention
5. patent
6. think
7. rigid
8. you
9. gain
10. tend
第二组
1. creative
2. strike
3. balance
4. hundred
5. worth
Part 2
1. possible
2. wheel
3. credit
4. true
5. lack
6. previous
7. science
8. choice
9. material
10. customer
11. market
12. available
第16篇
Part 1
第一组
1. until
2. expect
3. either
4. trick
5. eye
6. grandma
7. Olympic
8. sometimes
9. positive
10. hold
第二组
1. unfortunately
2. defeat
3. passive
4. step
5. decide
6. stress
7. list
8. write
9. doubt
10. occur
Part 2
1. roll
2. sleeve
3. primary
4. silly
5. math
6. mentor
7. practice
8. dull
9. wear
10. latest
11. trend
12. far
13. convince