Find the word whose main stress is placed differently
1. A.helicopter B.contact C.order D.appliance
2. A. surrounded B. skyscraper C.wireless D.solar
3. A. energy B.automatic C.dishwasher D.houseboat
4. A.pollute B.deforestation C.reduce D.reuse
5. A.rubbish B.bottle C.recycle D.favourite