能够与HIV病毒表面抗原结合的是宿主细胞表面的A．CD64 B．CD32 C．CDl 发布时间：2017-06-10 18:01 │ 来源：www.tikuol.com 题型：单项选择题 问题： 能够与HIV病毒表面抗原结合的是宿主细胞表面的A．CD64B．CD32C．CDl6D．CD8E．CD4
题型：单项选择题 阅读理解。 Good afternoon, and welcome to England. We hope that your visit here will be a pleasant one. Today, I would like to draw your attention to a few of our laws. The first one is about drinking. Now, you may not buy alcohol (酒) in this country if you are under 18 years of age, nor may your friends buy it for you. Secondly, noise. Enjoy yourselves by all means, but please don't make unnecessary noise, particularly at night. We ask you to respect other people who may wish to be quiet. Thirdly, crossing the road. Be careful. The traffic moves on the left side of the road in this country. Use pedestrian crossings (人行横道) and do not take any risk when crossing the road. My next point is about litter (throwing away wasted material in a public place). It is an offence (违法行为) to drop litter in the street. When you have something to throw away, please put it in your pocket and take it home, or put it in a litter bin. Finally, as regards smoking, it is againt the law to buy cigarettes or tabacco (烟草) if you are under 16 years of age. I'd like to finish by saying that if you require any sort of help or assistance, you should get in touch with your local police station, who will be pleased to help you. Now, are there any questions? 1. The main purpose of this speech would be to ____. [ ]Ａ: prepare people for international travel Ｂ: declare the laws of different kinds Ｃ: give advice to travellers to the country Ｄ: inform people of the punishment for breaking laws 2. From the speech we learn that ____. [ ]Ａ: In this country, if you are under 18 years of age, you may not buy alcohol, but your friend can buy it for you. Ｂ: You may not buy cigarettes or tobacco unless you are above 16 years of age. Ｃ: Because the traffic moves on the left side of the road, you must use pedestrian crossings when crossing the road Ｄ: You can't make noise except at night 3. Who do you think is most likely to make the speech? [ ]Ａ: A policeman Ｂ: A lawmaker Ｃ: A teacher Ｄ: A lawyer 查看答案
题型：单项选择题 一患者缺失，制作义齿时将模型向后倾斜，可使颊侧形成（）A．Ⅰ型观测线，卡环尖应向近中B．Ⅰ型观测线，卡环尖应向远中C．Ⅱ型观测线，卡环尖应向近中D．Ⅱ型观测线，卡环尖应向远中E．Ⅲ型观测线，卡环尖应向近中 查看答案
缺失，制作义齿时将模型向后倾斜，可使
颊侧形成（）