I. Choose the word in each line that has different stress pattern. 1. A. scientific B. dramatic C. athletic D.domestic 2. A. national B. chemical C. medical D.informal 3. A. natural B. poisonous C. medical D. horrific II. Find the word which has a different sound in the underlined part. 1. A. pollution B. earplug C. dump D. dust 2. A. untreated B. measure C. pleasure D. bread III. Choose the correct answer to complete each sentence: 1. A: How can light pollution ______ animals? B: It can make animals change their behavior patterns. A. cause B. make C. affect D. lead 2. A lot of waste from hotels and factories is dumped ______ the lakes. A. on B. in C. into D. from 3. ______ are things that make the air, water, and soil unclean or contaminated. A. Radiation B. Losses C. Pollution D.Pollutants 4. In the lesson, we came ______ with some good ideas to save water. A. up B. to C. for D. out 5. Many aquatic animals and plants have died ______ oil spills. A. because B. due to C. since D. as