6. A. priority                      B. relationship              C. enthusiast                 D. engineering

5. A. colony                       B. maintaining              C. maintenance             D. credible

4. A. tableland                   B. artistic                      C. contribute                 D. substantial

3. A. rainfall                      B. inquire                      C. confide                     D. machine

2. A. tunnel                        B. nightmare                 C. retain                        D. thesis

1. A. industry                    B. memory                    C. ambiguous                D. advertise

10. A. prediction               B. judgment                  C. intelligent                 D. compulsion

9. A. cultivate                    B. machine                    C. terminate                  D. operate

8. A. particular                  B. subordinate               C. several                      D. constructive

7. A. temperature               B. decorator                  C. calculator                 D. individual