第18题: [单项选择]A pervasive negative attitude of the engineers toward projects funded by his company is the cause of the delay of signing the contract. A. perpetual B. pernicious C. preventive D. prevalent 参考答案:D 答案解析:[解析] pervasive意为“普遍深入的”。D项prevalent“普遍的”符合题意,如:The habit of traveling by aircraft is becoming more p
第19题: [单项选择]根尖周肉芽肿内上皮可能来源于() A. Serre上皮剩余 B. Malassez上皮剩余 C. 口腔黏膜上皮 D. 呼吸道上皮 E. 牙周袋壁上皮 参考答案:B
第26题: [单项选择] The woman’’s last inquiry is mainly concerned with A. the time needed for sending the parcel. B. the flight time to New York. C. the parcel destination. D. parcel collection. 参考答案:A 答案解析:这道题容易将选项A和B混淆起来,但从对话中问话者的原话"How long will the parcel take to get to New York "可以看出,她询问的是包裹送到纽约所需的时间而