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1. A. uniform B. useful C. unique D. unidentified - 'uniform' and 'useful' have the underlined part ('uni-') pronounced as 'ju' (/jun/). - 'unique' has the underlined part ('uni-') pronounced as 'u' (/u/). - 'unidentified' has the underlined part ('uni-') pronounced as 'ənaɪ' (/ənaɪ/). So, the word whose underlined part is pronounced differently from the others is C. unique (its 'uni-' is pronounced as 'u' (/u/)). 2. A. lifestyle B. reality C. galaxy D. system - 'lifestyle' isn't listed but based on other given information, let's check others first. - 'reality' has its underlined part ('ali-') pronounced as 'aɪ' (/aɪ/). - 'galaxy' has its underlined part ('ali-') pronounced as 'aɪ' (/aɪ/). - 'system' isn't similar to the others; however, let's compare with 'lifestyle' (assuming it's 'laɪfstaɪl') first. - 'reality' and 'galaxy' both have the underlined part ('ali-') pronounced as 'aɪ' (/aɪ/). So, the word whose underlined part is pronounced differently from the others is D. system (its 'ys-' is pronounced as 'sɪ' (/sɪ/)). 3. A. breakdown B. great C. steak D. measure - 'breakdown' has its underlined part ('ea-') pronounced as 'eɪ' (/eɪ/). - 'great' has its underlined part ('ea-') pronounced as 'eɪ' (/eɪ/). - 'steak' has its underlined part ('ea-') pronounced as 'eɪ' (/eɪ/). - 'measure' has its underlined part ('ea-') pronounced as 'eʒ' (/eʒ/). So, the word whose underlined part is pronounced differently from the others is D. measure (its 'ea-' is pronounced as 'eʒ' (/eʒ/)). 4. A. playground B. thorough C. throughout D. outweigh - 'playground' has its underlined part ('ough-') pronounced as 'eɪ' (/eɪ/). - 'thorough' has its underlined part ('ough-') pronounced as 'oʊ' (/oʊ/). - 'throughout' has its underlined part ('ough-') pronounced as 'u' (/u/). - 'outweigh' has its underlined part ('ough-') pronounced as 'aʊ' (/aʊ/). All words have the underlined part ('ough-') pronounced differently. However, to pick one, 'playground', 'thorough', and 'throughout' have 'ough-' as a whole syllable, whereas 'outweigh' has it as part of a diphthong. So, the word whose underlined part is pronounced differently from the others is D. outweigh (its 'ough-' is pronounced as 'aʊ' (/aʊ/), being part of a diphthong). 5. A. wireless B. witness C. powerless D. weightless - 'wireless' has its underlined part ('-less') pronounced as 'lɪs' (/lɪs/). - 'witness' has its underlined part ('-wit-') pronounced as 'ɪt' (/ɪt/). - 'powerless' has its underlined part ('-less') pronounced as 'ləs' (/ləs/). - 'weightless' has its underlined part ('-less') pronounced as 'ləs' (/ləs/). So, the word whose underlined part is pronounced differently from the others is B. witness (its '-wit-' is pronounced as 'ɪt' (/ɪt/)). I'll analyze each word and provide the answer to the questions. 1. A. connection B. internet C. inventor D. technique Analyze: 'connection' stressed at second syllable 'internet' stressed at first syllable 'inventor' stressed at second syllable 'technique' stressed at second syllable Therefore, 'internet' has a different stress position to other words. Answer: B. internet 2. A. positive B. meaningful C. enormous D. benefit Analyze: 'positive' stressed at first syllable 'meaningful' stressed at first syllable 'enormous' stressed at second syllable 'benefit' stressed at first syllable Therefore, 'enormous' has a different stress position to other words. Answer: C. enormous 3. A. possibility B. impossible C. unidentified D. technological Analyze: 'possibility' stressed at third syllable 'impossible' stressed at second syllable 'unidentified' stressed at third syllable 'technological' stressed at third syllable Therefore, 'impossible' has a different stress position to other words. Answer: B. impossible 4. A. telepathy B. experienced C. unfortunate D. scientific Analyze: 'telepathy' stressed at second syllable 'experienced' stressed at second syllable 'unfortunate' stressed at second syllable 'scientific' stressed at third syllable Therefore, 'scientific' has a different stress position to other words. Answer: D. scientific 5. A. Vietnamese B. astronaut C. scientist D. poisonous Analyze: 'Vietnamese' stressed at fourth syllable 'astronaut' stressed at first syllable 'scientist' stressed at first syllable 'poisonous' stressed at first syllable Therefore, 'Vietnamese' and other words have different stress positions. However, since the question asks for one word, and 'Vietnamese' has the most different stress pattern compared to other words, Answer: A. Vietnamese 1. Holography typically is the field of creating three-dimensional images with light. 2. Khanh learns Korean through online classes on YouTube. 3. Tim Berners-Lee is best known as the inventor of the World Wide Web. 4. Some of the most popular social media websites include Facebook, YouTube, Instagram, Twitter, and Snapchat. 5. Voyager 2 is still the only spaceship to visit Neptune and Uranus. 6. Jupiter is by far the largest planet in our solar system. 7. Planets weigh different amounts, so their force of gravity is different. 8. Teens often use emojis to express their emotions and feelings in the text messages. 9. Digital communication is the use of online tools like email, social media, etc. to communicate. 10. The planets in our solar system are divided into two groups -- the inner planets and the outer.