请判断以下单词的重音位置：operation
A. ’operation
B. ope’ration
请判断以下单词的重音位置：personality
A. perso’nality
B. persona’lity
请判断以下单词的重音位置：subjective
A. ’subjective
B. sub’jective
Listen to the tape and decide whether (A) or (B) should be the one you hear.Be careful with that ______.
A. yellow JACKET(= yellow article of clothing）
B. YELLOW Jacket (= yellow and black insect that stings)
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