【单选题】

How many different kinds of emotions do you feel You may be (26) to find that it is very hard to state all of them in detail. Not only are emotional feelings hard to (27) in words, they are difficult to (28) .As a result, two people (29) agree on all of them. However, there are a number of (30) emotions that most people experience.

When we receive something that we want, or something happens (31) we like, we usually feel joy or happiness. Joy is a (32) and powerful emotion which we all try to get. It is natural that all of us search (33) happiness.As a (34) , joy occurs when we reach a (35) goal or obtain a desired object.
(36) people often desire different goals and object, it is (37) that one person may find joy in repairing an automobile, (38) another may find joy in solving a math problem. Of course, we often share (39) goals or interests, and therefore we can experience joy together.
When we have difficulty (40) desired objects or reaching desired goals we experience (41) emotions such as anger and grief. When little things get in our way, we experience (42) frustrations or tensions. For example, if you are dressing to go out (43) a date, you may feel (44) when a zipper breaks or a button falls off. If you really want something to happen, and you feel it should happen, but someone or something (45) it, you may become quite angry.
A．regular
B．common
C．usual
D．universal