单选题春秋战国时期，古琴音乐已具有一定的艺术表现能力，“伯牙鼓琴、子期知音”的故事早已深入人心。伯牙所奏琴曲为()。

单选题明朝建国之初，太祖朱元璋认为：“夫元氏之有天下，固有世祖之雄武，而其亡也，由委任权臣，上下蒙蔽故也。今礼所言不得隔越中书奏事，此正元之大弊，人君不能躬揽庶政，故大臣得以专权自恣。”基于这一认识，明太祖朱元璋( )。

单选题在某幼儿园，当王老师刚刚走上教育工作岗位的时候，他教的班级有个淘气的幼儿。每当教师讲课时，他总爱低头玩他桌子上放的“宝贝”横笛儿。有时候还会轻轻地吹一声“嘟——嘟——”令人恼火。 对此，最恰当的处理方式是( )。

单选题教师要公正地对待学生，首先是要真正()。

单选题关于抗体的叙述，正确的是（　　）。

单选题在幻灯片放映时要临时涂写，应该( )。

单选题在教师的人格特征中，有两个重要特征对教学效果有显著地影响，一是教师的热心和同情心，二是教师的______。 A.敬业精神 B.渊博的知识 C.富于激励和想象的倾向性 D.高超的能力

单选题认为人的发展主要依靠外在的力量，诸如环境的刺激和要求，他人的影响和学校的教育等，持这种观点的教育家是______。 A.孟子 B.荀子 C.格塞尔 D.威尔逊

单选题1958年4月24 日，中国自行设计制造的第一颗人造地球卫星由“长征一号”火箭成功发射。1988年9月27日，中国核潜艇水下发射运载火箭获得成功，中国空间技术进入新的时代。我国第一颗人造地球卫星的名字是(　　)。

单选题幼儿园教师在选择教育内容和教育材料时的依据是()。

单选题关于水稻，下列说法正确的是( )。

单选题陈老师在讲“二氧化碳性质”时，讲台上放着两瓶没有标签的无色气体，其中一瓶是二氧化碳，一瓶是空气。怎么区分它们呢?陈老师边说边将燃烧的木条分别伸人两个集气瓶中，告诉学生使木条熄灭的是二氧化碳，使木条继续燃烧的是空气。这种教学方法是()。

单选题发现行星运动定律的天文学家是()。

单选题( )是教学的重要环节，也是首要的教学准备工作。

单选题前滚翻教学中，教师组织学生对该技术在生活实践中的运用进行讨论，这一时期处于教学实施的哪一阶段?( )

单选题Millions of Americans lie awake at night counting sheep, or have a stiff drink or pop an allergy pill, hoping it will make them drowsy. But experts agree all that self-medicating is a bad idea, and the causes of chronic insomnia remain mysterious. Almost a third of adults have trouble sleeping, and about 10 percent have symptoms of daytime impairment that signal true insomnia. Sufferers readily cite the resulting problems: walking around in a fog, as memory and other cognitive functions slowly. Dozing off at the wheel or at work. Depression. Lack of energy. But for all the complaints, scientists know surprisingly little about what causes chronic insomnia, its health consequences and how best to treat it, a panel of specialists brought together by the National Institutes of Health concluded Wednesday. Two things are clear, the panel found: Chronic insomnia is a major public health problem. And too many people are using unproven therapies, even while there are a few treatments that do work. Among the panel's findings: Cognitive/behavioral therapy—a psychology-based treatment that trains people to reduce anxiety and take other sleep-promoting steps—is very effective, and doesn' t cause side effects. But it can be hard to find health providers trained in the techniques. Insomniacs should check with board-certified sleep specialists and psychologists. Newer prescription sleep pills called Sonata, Ambien and Lunesta work without many of the side-effect concerns of older agents known as benzodiazepines(苯二氮类镇静药). One study of Lunesta showed effectiveness with six months of use, but more research on long-term use of all three is needed, as chronic insomnia can linger for years. The most commonly used treatments are alcohol and over-the-counter sedating antihistamines(抗组胺剂)like Benadryl. Alcohol use actually disrupts quality sleep, and antihistamines can cause lingering daytime sedation and other cognitive problems. The most common prescription insomnia medicine is an older, sedating antidepressant called trazodone, even though there's no good evidence that it offers more than a two-week benefit, and it comes with side effects.

单选题师德的灵魂是()。

单选题不属于明朝章回体小说的是(　　)

单选题心理健康表现为个人具有生命的活力、积极的内心体验和良好的(　　)。

单选题暑假期间，小学生王某和李某相约在学校打篮球，在争抢过程中，王某不慎将李某撞倒在地，导致李某小腿骨折，对于李某所受伤害，应当承担主要赔偿责任的是（ ）