Choose the word that differs from the other three in the position of primary stress in each of the following questions

109. A. administrative (stress on the 4th syllable) - B. intervention (stress on the 3rd syllable) - C. productivity (stress on the 3rd syllable) - D. opportunity (stress on the 4th syllable). Answer: B (intervention)

110. A. ethnic (stress on the 1st syllable) - B. enjoy (stress on the 2nd syllable) - C. experience (stress on the 3rd syllable) - D. terrorist (stress on the 1st syllable). Answer: C (experience)

111. A. economy (stress on the 2nd syllable) - B. Different (stress on the 1st syllable) - C. future (stress on the 1st syllable) - D. relationship (stress on the 3rd syllable). Answer: D (relationship)

112. A. development (stress on the 2nd syllable) - B. threaten (stress on the 1st syllable) - C. burden (stress on the 1st syllable) - D. security (stress on the 2nd syllable). Answer: B (threaten)

113. A. experience (stress on the 2nd syllable) - B. powerful (stress on the 1st syllable) - C. influence (stress on the 1st syllable) - D. electronic (stress on the 2nd syllable). Answer: B (powerful)

114. A. corporation (stress on the 3rd syllable) - B. system (stress on the 1st syllable) - C. depression (stress on the 2nd syllable) - D. medical (stress on the 1st syllable). Answer: B (system)

115. A. ahead (stress on the 2nd syllable) - B. history (stress on the 1st syllable) - C. paper (stress on the 1st syllable) - D. invention (stress on the 2nd syllable). Answer: A (ahead)

116. A. pessimistic (stress on the 2nd syllable) - B. modern (stress on the 1st syllable) - C. environment (stress on the 2nd syllable) - D. dangerous (stress on the 1st syllable). Answer: B (modern)

117. A. disappear (stress on the 3rd syllable) - B. responsibility (stress on the 3rd syllable) - C. relationship (stress on the 3rd syllable) - D. electricity (stress on the 4th syllable). Answer: D (electricity)

118. A. shuttle (stress on the 1st syllable) - B. completely (stress on the 2nd syllable) - C. terrorism (stress on the 1st syllable) - D. organism (stress on the 1st syllable). Answer: B (completely)

Tóm lại, trong mỗi câu hỏi, từ khác biệt thường có trọng âm đặt ở một vị trí khác so với ba từ còn lại, và việc xác định trọng âm là một yếu tố quan trọng khi phân tích từ vựng tiếng Anh.