网络舆论最大的特色就是（）。A、对公共政策的监督 B、对公共权力的监督 C、对公众人物的

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 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 (72) nature of the task. In one way or another the problem is 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.

A．programming

B．composing

C．working

D．writing

管理价值的特点？

失眠者往往认为失眠是自己内部的原因造成的，比如自己神经衰弱、焦虑、紧张等，因而可以通过改变他们的______模式来使失眠程度得到缓解。( )

A．睡眠

B．生活

C．归因

D．治疗

背景材料：
我国南方某两车道隧道呈南北向展布，隧道最大埋深为80m，隧道全长470m，隧道进出口段的围岩为较软岩，岩体破碎，且BQ值＜250。隧道洞口覆盖层较薄，有坍方、落石等危害，且有较大的偏压。隧道施工地段无有害气体。隧道采用钻爆法开挖之后，及时施作第一次衬砌。通过施工和监控量测，确定围岩变形稳定之后，修筑防水层及施作第二次衬砌。
根据以上材料，完成下列题目：

按所处地层划分，本隧道属于( )隧道。

A．软土

B．浅埋

C．瓦斯

D．岩石

关于现代侦察监视技术在军事上应用的错误叙述是（）。

A.空间侦察监视

C.水下电磁波侦察监视

B.空中侦察监视

D.地面侦察监视