I. Choose the word which has the underlined part pronounced differently from the rest. 1. A. chemical B. which C. change D. each 2. A. attitude B. survive C. introduce D. human 3. A. protect B. commercial C. construction D. climate 4. A. endangered B. destroyed C. damaged D. provided 5. A. medicine B. priority C. crisis D. primary II. Choose a word in each line that has different stress pattern. 1. A.disappearance B. vulnerable C. conservation D. generation 2. A. ability B. agriculture C. development D. contaminate 3. A. current B. global C. crisis D. mankind 4. A. temperature B. serious C. awareness D. chemical 5. A. government B. agency C. benefit D. diversity