Why is (21) fun What delights may its practitioner expect as his reward First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. Second is the pleasure of making things that are useful to other people. Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. Fourth is the joy of always learning, which springs from the
(22) nature of the task. In one way or another the problem is ever new, and its solver learns something:sometimes (23) , sometimes theoretical, and sometimes both. Finally, there is the delight of working in such a tractable medium. The (24) , like the poet, works only slightly removed from pure thought-stuff. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures.
Yet the program (25) , unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.

A．semantic

B．practical

C．lexical

D．syntactical

请在“答题”菜单下选择“汉字录入”命令，启动汉字录入测试程序，按照题目上的内容输入汉字： 巨人网络此次美国IPO的主承销商是美林和瑞银，目前融资额尚未确定。不久前，完美时空在纳斯达克上市募集了1.88亿美元，其第1季度收入和净利润分别只有8720万元和4000万元，此次巨人募集资金毫无疑问要远超过完美时空。而业界人士更认为，巨人上市之后，史玉柱在网络游戏业界的地位很有可能超过网游老大陈天桥。