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因素分析的目的就是要测定现象总变动中各因素的影响方向和影响程度。
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Trying to Find a Partner One of the most striking findings of a recent poll in the UK is that of the people interviewed， one in two believes that it is becoming more difficult to meet someone to start a family with. Why are many finding it increasingly difficult to start and sustain intimate relationships？ Does modern life really make it harder to fall in love？ Or are we making it harder for ourselves？ It is certainly the case today that contemporary couples benefit in different ways from relationships. Women no longer rely upon partners for economic security or status. A man doesn't expect his spouse to be in sole charge of running his household and raising his children. But perhaps the knowledge that we can live perfectly well without a partnership means that it takes much more to persuade people to abandon their independence. In theory， finding a partner should be much simpler these days. Only a few generations ago， your choice of soulmate （心上人） was constrained by geography， social convention and family tradition. Although it was never explicit， many marriages were essentially arranged. Now those barriers have been broken down. You can approach a builder or a brain surgeon in any bar in any city on any given evening. When the world is your oyster （牡蛎） ，you surely have a better chance of finding a pearl. But it seems that the old conventions have been replaced by an even tighter constraint： the tyranny of choice. The expectations of partners are inflated to an unmanageable degree： good looks， impressive salary， kind to grandmother， and right socks. There is no room for error in the first impression. We think that a relationship can be perfect. If it isn't， it is disposable. We work to protect ourselves against future heartache and don't put in the hard emotional labor needed to build a strong relationship. Of course， this is complicated by realities. The cost of housing and child-rearing creates pressure to have a stable income and career before a life partnership. Which of the following is NOT expected of a partner according to this passage？（）
普通地图可以分为（）、（）。
注射成型后的塑料制件及浇注系统的凝料从模具中脱出的机构称为（）。
在万用表的标度盘上标有“AC”的标度尺为测量（）时用的。
半夏泻心汤组成中含有的药物是（）
历史唯物主义的基本内容。
结核引起机体的免疫是（）
肾主生殖，不孕与肾的关系密切，并与（）、（）、冲任的功能失调，或脏腑气血不和，影响胞脉、胞络功能有关。
食用过多苦杏仁可引起（）
目前光通信光源使用的波长范围在（）光区内，即波长在0.8～1.7μm之间，是一种不可见光，是一种不能引起视觉的电磁波。