题目

设向量，，若，则__________. 答案：【答案】【解析】由向量共线的坐标表示，可求解a,计算的坐标，利用模长公式，即得解由向量，所以，.故答案为：. 任务型读写。阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。注意：每个空格只填一个单词。      If we agree that the function of education is to prepare us for life, then there is very little time to waste. So, while we can, we ought to concentrate on teaching children something really useful. Here is what ourschool should teach.      Politeness is a mark of civilization. The sooner children learn this, the better. In any case, a lot can be accomplished by a smile and good manners.      Like it or not, our adult lives will be consumed by the struggle for money, but we don't make an effortto teach children how to manage it. So our schools have a duty to teach them this ability from the beginning.      We're likely no accepted something we are told, but that's not what educated people do. Educated peopleare reasonable and they look at facts. If our schools teach nothing else, they should at least teach critical (批判性的) thinking.      Children should learn to take care of their health. They should know that if they eat junk food (垃圾食品), they will become fat and unhealthy. They should be very clear about what happens to their bodies when theydrink or smoke.      All of us are part of society. We have rights and responsibilities. We ought to understand what they are. We have to know a little bit of history and geography, because we need to have an environment in which to relate to the people around us.      How will we test students on these? We can't. But that's not a reason to avoid teaching what is important. Our schools should spend every moment they have telling this to our children:"This is life, this is what you are going to face, and this is how you deal with it." Title Very Useful 1_____ Introduction Education should be a 2_____ for life. Advice Important things should be taught in 3_____. Teaching 4_____  ●How to behave 5_____●The basic skill of 6_____ money ●How to 7_____ in a critical way●How to keep 8_____ ●The rights and responsibilities one has in 9_____ Conclusion Children should be taught what 10_____ is and how to deal with it.