第5题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. Be interviewed for work. B. Buy a birthday present. C. Go to Mary’s birthday party. D. Go to Mary’s wedding ceremony. 参考答案:C 答案解析:[听力原文] M: Here you are at last. We’ll be late and Mary will be upset. W: I’m sorry, John. I ha
第6题: [单项选择]为防止逆变失败,最小逆变角βmin应选()。 A. 0° B. 15~20° C. 20~30° D. 30~35° 参考答案:D