* Choose the word whose underlined part is pronounced differently from that of the others.
1. A. fluoride B. emit C. pipe D. wildlife
2. A. natural B. safeguard C. conservationist D. vapor
3. A. gallery B. gemstone C. government D. Google
4. A. exchange B. charity C. challenge D. brochure
* Pick out the word whose main stressed syllable is different from the rest.
1. A. interviewer B. solution C. invisible D. inquiry
2. A. desperate B. deliberate C. delicacy D. demonstrate
3. A. evacuate B. escalate C. estimate D. evidence
4. A. inspire B. instruct C. intensive D. instrument