II. Choose the word which has a different stress pattern from the others.

1. A. activity                 B. enjoyable                 C. economy                 D. difficulty

2. A. environment         B. ecology                 C. intervention         D. community

3. A. Vietnamese         B. contribution         C. conservation         D. concentrate

4. A. alternative         B. competitive         C. conservative         D. inexpensive

5. A. economical         B. ecological                 C. environmental         D. unavoidable

6. A. eliminate         B. concentration         C. eventually                 D. inhabitant

Unit 10 - (HS)