I.Choose a word in each line that has different stress pattern.

1.A. atmosphere                   B. plentiful                C. effective               D. natural

2.A. constancy                      B. sympathy              C. generous               D. suspicious

3.A. unfortunate                   B. continuous           C. renewable             D. artificial

4.A. recommend                   B. abundant               C. solution                 D. increasing

5.A. confident                       B. memorable           C. excited                  D. interested

6.A. motorbike                     B. generate                C. advantage             D. atmosphere

7.A improvement                 B. different                C. develop                 D. enormous

8.A. seriously                       B. personally            C. carefully               D. correctly