题目

下列叙述中正确的是：（） ①NH3易液化，液氨常用作制冷剂 ②可用铁、铝制容器盛装浓硝酸和浓硫酸 ③利用氨气极易溶于水，氨气可做喷泉实验 ④所有的氮氧化物均易溶于水 ⑤铵盐受热分解一定都会产生氨气 ⑥可用淀粉-KI试纸鉴别红棕色的Br2蒸气和NO2气体 A . ①③ B . ①②③ C . ①②③④ D . ①②③④⑤⑥For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the line between what I control and what you do?Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither is willing to admit any responsibility for starting it. From the parents’ point of view, the only cause of their fight is their teenagers’ complete unreasonableness. And of course, the teens see it in exactly the same way, except oppositely. Both feel trapped.In this article, I’ll describe three no-win situations that commonly arise between teens and parents and then suggest some ways out of the trap. The first no-win situation is quarrels over         unimportant things. Examples include the color of the teen’s hair, the cleanliness of the bedroom, the preferred style of clothing, the child’s failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends .Second, blaming, the goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong. Third, needing to be right, It doesn’t matter what the topic is –politics, the laws of physics, or the proper way to break an egg –the point of these arguments is to prove that you are right and the other person is wrong, for both wish to be considered an authority(权威) --- someone who actually knows something --- and therefore to win respect. Unfortunately, as long as parents and teens continue to think that they know more than the other, they’ll continue to fight these battles forever and never make any real progress. 【小题1】Why does the author compare the parent—teen war to a border conflict?A．both can continue for generations.B．Both are about where to draw the line. C．Neither has any clear winner.D．Neither can be put to an end.【小题2】What does the underlined part in Paragraph 2 mean?A．The teens blame their parents for starting the conflict.B．The teens agree with their parents on the cause of the conflict. C．The teens accuse their parents of misleading them. D．The teens tend to have a full understanding of their parents.【小题3】Parents and teens want to be right because they want to ________.A．give orders to the otherB．know more than the other C．gain respect from the otherD．get the other to behave properly