搜题请搜索小程序“爱下问搜题”
问题 选择题

-What else do you want?

-____ else. I think I have got everything ready.[ ]

A. Something

B. Nothing

C. Anything

D. Everything

答案

答案：B

单项选择题

Why is (71) 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 hid 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 (72) nature of the task．In one Way or another the problem id ever new, and its solver learns something：sometimes (73) ，sometimes theoretical，and sometimes both．Finally there is the delight of Working in such a tractable medium．The (74) ，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 (75) ，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．

（73）处填（）。

A．semantic

B．practical

C．lexical

D．syntactical
查看答案
解答题

已知y1是正比例函数，y2是反比例函数，并且当自变量取1时，y1=y2；当自变量取2时，y1-y2=9，求y1和y2的解析式．
查看答案