I. PHONETICS :Circle the letter A, B, C, or D to choose the word that has the underlined part pronounced differently from the others.
1. A. bulb B. plumber C. label D. hobby
2. A. bulb B. consumer C. plumber D. luxury
3. A. crack B. nuclear C. faucet D. car
4. A. hedge B. hike C. harvest D. prohibition
