北京某工厂的机电安装工程由该市某机电工程安装公司承担。其中两台起重机分布在两车间，对设备进行吊装就位。项目经理要求设备技术人员制订施工方法和操作工艺，并制订吊装方案，为工艺设备吊装就位创造条件。工程按照吊装方案的步骤顺利地进行，按期完成安装任务。
吊装成功的关键在于( )的合理选择。

It is natural for young people to be critical of their parents at times and to blame them for most of the misunderstandings between them. They have always complained, more or less justly, that their parents are out 0f touch with modern ways; that they are possessive and dominant, that they do not trust their children to deal with crises; that they talk too much about certain problems-and that they have no sense of humor, at least in parent-child relationships. I think it is true that parents often underestimate their teenage children and also forget hwo they themselves felt when young, Young people often irritate their parents with their choices in clothes and hairstyles, in entertainers and music. This is not their motive, They feel cut off form. the adult world into which they have not yet been accepted. So they created a culture and society of their own. Then, of it turns out that their music or entertainers of vocabulary or clothes or hairstyles irritate their parents, this gives them additional enjoyment. They feel they are superior, at least in a small way and that they are leaders in style. and taste. Sometimes you are resistant, and proud because you do not want to your parents to approve what you do. If they did approve, it looks as if you are betraying your own age group, But in that case, you are assuming that you are the underdog: you can't win but at least you can keep you honor. This is a passive way of looking at things, it is natural enough after long years of childhood when you were completely under your parents' control, but it ignores the fact that you are now beginning to be responsible for yourself. If you plan to control your life, cooperation can be part of that plan. You can charm others, especially parents, into doing things the way you want. You can impress others with your sense of responsibility and initiative so that they will give you the authority to do what you want to do.The author is primarily addressing ______.A．parents of teenagersB．newspaper readersC．those who give advice to teenagersD．teenagers 点击查看答案

Pageants are usually conceived on a fairly large scale, often under the auspices of some local or civic authority or at any rate in connection with local groups of some kind. This sometimes means that there is an allocation of funds available for the purpose of mounting the production, though unfortunately this will usually be found to be on the meager side and much ingenuity will have to be used to stretch it so that all performers can be adequately clothed. Most pageants have a historical flavour as they usually come about through the celebration of the anniversary of some event of historic importance, or the life or death of some local worthy. Research among archives and books in the public .library will probably prove very useful and produce some workable ideas which will give the production an especially local flavour. From the first economy will have to be practiced because there are usually a great number of people to dress. Leading characters can be considered individually in the same way as when designing for a play; but the main body of the performers will need to be planned in groups and the massed effect must be always borne in mind. Many pageants take place in daylight in the open air. This is an entirely different problem from designing costumes which are going to be looked at under artificial lighting; for one thing, scenes viewed in the daylight are subject to many more distractions. No longer is everything around cut out by the surrounding darkness, but instead it is very easy to be aware of disturbing movement in the audience of behind the performers. Very theatrically conceived clothes do not always look their best when seen in a daylight setting of trees, verdant lawns and old ivy-covered walls; the same goes for costumes being worn in front of the mellow colors of stately homes. The location needs to be studied and then a decision can be made as to what kinds of colors and textures will harmonize best with the surroundings and conditions and then to carry this out as far as possible on the funds available. If money is available to dress the performers without recourse to their own help in the provision of items, it is best to arrange for all the cutting and pinning together of the costumes to be done by one or two experienced people than to be given out to the groups and individuals for completion. When there is little or no money at all, the garments need to be reduced to the basic necessities. Cloaks and shawls become invaluable, sheets and large bath towels and bath sheets are admirable for draping. Unwanted curtains and bed spreads can be cut to make tunics, robes and skirts. These are particularly valuable if they are of heavy fabrics such as velvet or chenille. Colors should be massed together so that there are contrasting groups of dark and light, this will be found to help the visual result substantially. Crowds of people gathered together in a jumble of colors will be ground to look quite purposeless and will lack dramatic impact. The use of numbers of identical head dresses, however simply made, are always effective when working with groups. If these are made of cardboard and painted boldly the cost can be almost negligible. Helmets, hats and plumes will all make quite a show even if the costumes are only blandest or sheets cleverly draped. The same can be said of the use of banners, shields and poles with stiff pennants and garlands—anything which will help to have a unifying effect. Any kind of eye catching device will always go with a flourish and add excitement to the scenes.The main idea of this passage is ______.A．pageantsB．costumes on the stageC．costumes for pageantsD．how to arrange a pageant 点击查看答案