1. The underlined part in "nuclear" differs in pronunciation from the rest. It is pronounced as /ˈnjuː.kliər/ while the others are pronounced as follows:
   - abundant: /əˈbʌn.dənt/
   - truck: /trʌk/
   - dump: /dʌmp/

2. The underlined part in "played" differs in pronunciation from the rest. It is pronounced as /pleɪd/ while the others are pronounced as follows:
   - crossed: /krɒst/
   - described: /dɪˈskraɪbd/
   - terrified: /ˈter.ɪ.faɪd/

3. The underlined part in "decided" differs in pronunciation from the rest. It is pronounced as /dɪˈsaɪdɪd/ while the others are pronounced as follows:
   - danced: /dænst/
   - discussed: /dɪˈskʌst/
   - pronounced: /prəˈnaʊnst/

4. The underlined part in "great" differs in pronunciation from the rest. It is pronounced as /ɡreɪt/ while the others are pronounced as follows:
   - bread: /bred/
   - instead: /ɪnˈsted/
   - spread: /spred/

5. The underlined part in "vocabulary" differs in pronunciation from the rest. It is pronounced as /vəˈkæbjəleri/ while the others are pronounced as follows:
   - blood: /blʌd/
   - doubtful: /ˈdaʊtfʊl/

1. nuclear 2.crossed 3.decided 4.great 5. doubtful

2 và 3 và 5 nhé mong đúng