第2题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. They always do the same job. B. They always relax themselves. C. They are going to work this weekend. D. They are seeing a film. 参考答案:A 答案解析:[听力原文]
M: I’m bored with the same job all the time.
W: How about seeing a film
Q: What do we lea
第11题: [单项选择]75%氟化钠甘油糊剂的作用是() A. 治疗牙本质过敏的药物 B. 治疗牙周病的药物 C. 治疗牙髓病的药物 D. 治疗根尖周病的药物 E. 用于龋洞消毒的药物 参考答案:A 答案解析:75%氟化钠甘油糊剂可渗入牙齿硬组织中,使硬组织中的氢氧磷灰石变为氟磷灰石,从而增强硬组织的抗酸能力,并能改变唾液的性质。唾液中含氟化物可以抑制乳酸杆菌的生长,还可抑制唾液中的一些酶的活性,使产酸和牙