1d
2a
3c
4b
5a
6a
7b
8d
9a
10c
11.A. chemical B. physical C. environmental D. medical
12. A. linguistic B. classical C. phonetic D. romantic
13. A. radiation B. political C. historical D. contaminant
14. A. scientist B. dramatic C. athletic D. domestic
15. A. national B. chemical C. medical D. informal