依据韦纳的成就动机归因理论，属于内部、稳定、不可控的因素的是______。

科研人员乘气球进行科学考察，气球、座舱、压舱物和科研人员的总质量为990kg。气球在空中停留一段时间后，发现气球漏气而下降，及时堵住，堵住时气球下降速度为1m／s，且做匀加速运动，4s内下降了12m。为使气球安全着陆，科研人员向舱外缓慢抛出一定的压舱物，此后发现气球做匀减速运动，下降速度在5分钟内减少3m／s，若泄漏气体的质量可忽略，重力加速度g=9．89m／s 2 ，求抛掉的压舱物的质量。

下列作家属于南国社的是( )。

从5双大小均不相同的鞋子中任意取4只，那么这4只鞋子至少能配成一双鞋子的概率是______。

下列关于公文的相关格式要求，说法有误的是______。

概念的内涵增加的同时，它的外延就______了。

下列做法最不利于培养学生的创造性的是______。

下面是人教版一年级《语文》上册课文1《画》，请根据课文内容设计一个课堂问题，并说明设计意图。

RobertBurnswasa______poet.

已知双曲线C：2x2-y2=2与点P(1，2)。

“四书”是我国封建社会学校教育具有代表性的教育内容，下列属于“四书”的有______。

利用霍尔效应制作的霍尔元件，广泛应用于测量和自动控制等领域。如图是霍尔元件的工作原理示意图，磁感应强度B垂直于霍尔元件的工作面向下，通入图示方向的电流I，C、D两侧面会形成电势差UCD，下列说法中正确的是()。

2011年9月29日。我国在酒泉卫星发射中心用长征二号F运载火箭将天宫一号目标飞行器发射升空。11月初，神舟八号飞船也发射升空，在太空中与天宫一号交会对接——这将使我国成为世界上第三个掌握空间交会对接技术的国家。关于飞船与天宫一号对接问题，下列说法正确的是( )

《______》被称为“汉人石刻，气魄深沉雄大”的杰出代表，其主体雕刻是《______》。

多元智力理论是新课程改革的理论基础之一，其提出者为( )。

京剧的唱腔有______

The ability to do several things at once has become one of the great measures of self-worth for 21st-century Americans. It is called multitasking, and it takes many forms. As one example, why go out to lunch when you can eat at your desk, talk to a client on the phone, scroll through your e-mail, and scan a memo simultaneously? And why simply work out on treadmill(单调的工作)when you could be watching television and talking on a portable phone at the same time? What a feeling of satisfaction and accomplishment—three activities for the time commitment of one! Ah, such efficiency. No wonder those who turn "to do" lists into a time-management art form are inclined to boast, "Look, me, how many things I can accomplish at once. If I'm this busy, I must be important." Yet last week the New York Assembly struck a blow against multitasking, at least behind the wheel, when it approved a bill banning drivers in the state from using handheld cellular phones. Too dangerous, the assembly said, citing research showing that drivers are four times more likely to have a collision when they are talking on a cellphone. No one can argue against using time effectively. But accompanying the supposed gains are losses. Consider the woman out for an early-morning walk in a suburban neighborhood. She strides briskly, head down, cellphone clamped to her ear, chattering(喋喋不休)away, oblivious of the birds and flower and glorious sunshine. Did the walk have any value? More than a decade ago, long before multitasking became a word in everyday use, a retired professor of theology in Indiana with whom I corresponded made a case for what might be called uni-tasking—the old-fashioned practice of doing one thing at a time. Offering the simplest example, he said, "When you wash the dishes, wash the dishes." Good advice, I've found, whatever the task. Perhaps, too, the ban on phoning on the road will even spark a move away from other forms of dual activity. Who can tell? It could mark the first step in a welcome reconsideration of what really constitutes productivity and accomplishment.

已知z是纯虚数，是实数，那么z的虚部等于______

根据下面资料，作答以下两小题。 作文课上，李老师说：“作文材料就像是海洋中的浪花

2012年，中国作家莫言以作品___________获诺贝尔文学奖。