单选题______ three years old, his parents died, leaving him alone. A. Being B. When being C. He was D. When he was

单选题已知平面α⊥平面β，α∩β=l，点A∈α，Al，直线AB∥l，直线AC⊥l，直线m∥α，m∥β，则下列四种位置关系中，不一定成立的是______A.AB∥mB.AC⊥mC.AB∥βD.AC⊥β

单选题歌曲《延安颂》的词曲作者分别是______。

单选题2009年要继续加大对“三农”、就业、社会保障、教育、医疗、节能减排、自主创新、先进装备制造业、服务业、中小企业、重大改革等方面的支持力度，加大对低收入家庭补贴和救助力度。这一系列举措最主要的任务和目标是( )A．增加就业B．稳定物价C．促进社会发展和经济增长D．保持财政收支平衡

单选题学习把白菜、青菜、番茄概括为“蔬菜”，这种学习属于( )

单选题孟子说“征于色、发于声、而后喻”是在强调教师的______。

单选题生理学家发现，怀孕期间，怀孕者体内会分泌一些激素促使母亲对子女产生特殊的感情，同时怀孕者体内激素分泌发生了剧烈变化，可能影响雌性大脑的某些区域。这些受影响的区域，一部分与控制母性行为有关，另一些则控制着记忆、学习以及对恐惧或压力产生反应。据此，可以推出______。

单选题习近平总书记指出，作为一个制造业大国，我们的人才基础应该是技工。从参加世界技能大赛的情况来看，其他国家的焊工一般受过专业培训，而我国焊工则大部分缺乏系统培训，不是正规军，而且，许多技能竞赛领域都存在同样的问题。当前，国内产业结构调整对技术人才的要求越来越高，但是我国技能劳动者仅占就业人员的19%，高级技术工人仅占工人总数的5%。中国机床产量占到世界的38%，但高档数控机床还靠进口；虽然钢铁产量世界第一，但码头上高吨位起重机的钢丝绳还需进口。 这段话主要想表达的观点是：

单选题One effective way of destroying happiness is to look at something and focus on even the smallest fault. It"s like looking at the tiled ceiling and concentrating on the space where one tile is 1 . Once I heard a bald man said, "Whenever I enter a room all I see is hair." Once you"ve 2 what your missing tile is, explore whether acquiring it will really make you happy. Then do one of the three things: get it, replace it with a different 3 , or forget about it and focus on the tiles in your life that are not missing. We all know people who have a relatively 4 life, yet are essentially unhappy while people who have suffered a great deal but generally remain happy. The first 5 is gratitude. All happy people are grateful. Ungrateful people cannot be happy. We tend to think that being unhappy leads people to 6 , but it"s truer to say that complaining leads to people becoming unhappy. The second secret is realizing that happiness is a byproduct of something else. The most obvious 7 are those pursuits that give our lives purpose—anything from studying insects to playing baseball. The more passions we have, the more happiness we are 8 to experience. Finally, the belief that something permanent goes beyond us and that our destination has some larger meaning can help us to feel happier. We 9 a spiritual faith, or a philosophy. Whatever your philosophy is, it should include this truth: if you choose to find the 10 in every situation, you will be blessed, and if you choose to find the awful, you will be cursed. As with happiness itself, this largely depends on your decision to make.

单选题______ from the top of the tower, the south foot of the mountain is a sea of trees. A.Seen B.Seeing C.Having seen D.To see

单选题儿童玩游戏机的水平不亚于成人，这是因为他们的某种能力已有较好的发展，这个能力即是( )。

单选题菱形的对角线相等，正方形是菱形，所以正方形的对角线相等，以上三段论推理中错误的是( )．

单选题下列句子中，加点字的注音正确的一项是______。 A.阅读让灵魂站立，它使你在暴风骤雨中站成威严的雕像，在骄阳烈日下站成叱咤咤(chà)风云的勇士。 B.走进自然，嗅一缕沁(qìn)人心脾的花香，听一曲微风清爽的吟唱，整个世界仿佛都在微笑。 C.没有推窗邀月的情怀，没有把酒临风的洒脱，生活就只会让你咀嚼(jiáo)出淡淡的苦味。 D.《济南的冬天》行文如山中高士闲庭信步，左右踱(dú)行，怡然自得。

单选题将教学目标分为认知、情感和动作技能三大领域的是______

单选题“素质教育要着眼于学生自我学习、自我教育、自我发展的知识与能力，真正把对学生教育的重心转移到启迪心智、孕育潜力、增强后劲上来。”这句话主要强调了素质教育的______特点。

单选题教师坚持正确职业行为方向的保证是什么?( )

单选题质量相等的两份气体样品。一份是CO，另一份是CO2，这两份气体样品中CO与CO2所含氧原子的原子个数之比是______。 A.1:2 B.1:4 C.11:14 D.11:28

单选题下图是某国1961～2006年城镇人口和乡村人口的变化曲线。根据图完成下列问题。

单选题德育过程结构的构成要素是______。

单选题矩形导线框abcd固定在匀强磁场中，磁感线的方向与导线框所在平面垂直。规定磁场的正方向垂直纸面向里，磁感应强度B随时间变化的规律如图所示。若规定顺时针方向为感应电流I的正方向，下列I—t图中正确的是______。A．B．C．D．