Task 1: Choose a word in each line that has different stress pattern.1. A. potato B. computer C. adventure D. energy2. A. surprising B. seventy C. precaution D. collapse3. A. favorite B. elephant C. pollution D. holiday4. A. India B. equation C. tomorrow D. remember5. A. chocolate B. animal C. recycle D. happiness6. A. exercise B. calendar C. travelling D. convenience7. A. advantage B. enormous C. petroleum D. tendency8. A. excellent B. marvelous C. familiar D. similar9. A. abundant B. wonderful C. convenient D. attention10. A. holiday B. effective C. pollution