题目

It is a hot summer day，and you feel thirsty. A friend gives you a glass of cold lemonade．How do you feel when you see the glass? Will you describe your feeling as happiness or as pleasure? I believe you will say it is a feeling of pleasure．There is a connection between these two kinds of feelings，and sometimes one causes the other，but they are not the same．Pleasure is more dependent on the five senses while happiness is independent of them．     When you are happy，little unpleasant events usually do not disturb you．When you are unhappy，you feel as if everything i魏晋南北朝时期,实现我国北方统一的少数民族政权,下列搭配正确的一项是（ ）A.东晋—鲜卑族 B.前秦—氐族C.北魏—匈奴族 D.西汉—羯族