问题
多项选择题
亨廷顿病诊断和试验诊断依据的是（）。
A.依赖阳性家族史
B.特征性的临床表现
C.发病后一般存活时间10～18年
D.常伴有其他神经递质和肽类调质水平的变化
E.对位于4号染色体（4p16）的HD基因出现CAG（多聚谷氨酸）的重复扩展进行测定
答案
参考答案：A, B, E
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亨廷顿病诊断和试验诊断依据的是（）。
A.依赖阳性家族史
B.特征性的临床表现
C.发病后一般存活时间10～18年
D.常伴有其他神经递质和肽类调质水平的变化
E.对位于4号染色体（4p16）的HD基因出现CAG（多聚谷氨酸）的重复扩展进行测定
参考答案：A, B, E
In Britain, people have different attitudes(态度) to the police. Most people generally appreciate(欣赏) them and the job they do—although there are some people who do not believe that the police _ have the power that they do. What does a policeman do in fact? It is not _ job to describe. After all, a policeman has a number of jobs in one. A policeman often has to control traffic, either on foot in the centre of a town, or in a police car on the roads. Indeed, in Britain, he might be in the Traffic Police and spend all, or a lot of, his time driving up and down main roads and motorways. A traffic policeman has to help keep the traffic moving, stop _ motorists and help when there is an accident. A policeman has to help keep the peace, too. If there is a fight or some other disturbance(动乱), we _ _ the police to come and keep order. And they often have to _ the situation at great risk to their own _. We expect the police to solve crimes, of course, so an ordinary(普通) policeman, even if he is not a detective, will often have to help _ _ and arrest criminals. And _ __ do we call when there is an emergency—an air crash, a _ , a road accident, or a robbery? We call the police. So a policeman has to be _ to face any unpleasant emergency that may happen in the modern world. The police do a necessary job, and they do it very well and I support them, but I do not envy policemen. I do not think that I could ever do the job of a policeman.
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