单选题《边城》是哪位作家的代表作?()

单选题屠呦呦获得诺贝尔生理学或医学奖，这是她及其团队根据国家需求克服困难，执著进行科学研究的结果，表明______。 ①实现人生价值需顽强拼搏，自强不息 ②要在个人与社会的统一中实现价值 ③理想信念是实现人生价值的决定因素 ④人的物质贡献和精神贡献总是统一

单选题核苷酸的碱基具有共轭双键结构，故核苷酸在紫外光波长______nm左右有强吸收峰。 A.280 B.220 C.260 D.240

单选题某生会背九九乘法口诀并懂得“三三得九”是3个3相加之和是9，这种学习属于______。 A.信号学 B.连锁学习 C.机械学习 D.意义学习

单选题教师张某对学校给予的处分不服，依据相关法律，他可以采用的法律救济途径是______

单选题教师不得随意宣扬学生的缺点或隐私，不得随意私拆、毁弃学生的信件、日记，这属于学生享有的( )。

单选题积木、拼板、穿珠等材料应放在______。 A.操作区 B.木工区 C.科学区 D.语言区

单选题从某种意义上说，教师的()比道德宣言或道德演讲更能教育学生。

单选题下列选项中与其他三项不是同一类的是( )。

单选题 In the late 1960s, many people in North America turned their attention to environmental problems, and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that a cluster of tall buildings in a city often transportation and parking lot capacities. Skyscrapers are also lavish consumers, and wasters, of electric power, In one recent year, the addition of 17 million square feet of skyscraper office space in New York City raised the peak daily demand for electricity by 120,000 kilowatts--enough to supply the entire city of Albany, New York, for a day. Glass-walled skyscrapers can be especially wasteful. The heat loss (or gain) through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insulation board. To lessen the strain on heating and air-conditioning equipment, builders of skyscrapers have begun to use double-glazed panels of glass, and reflective glasses coated with silver or gold mirror films that reduce glare as well as heat gain. However, mirror-waned skyscrapers raise the temperature of the surrounding air and affect neighboring buildings. Skyscrapers put a severe strain on a city's sanitation facilities, too. If fully occupied, the two World Trade Center towers in New York City would alone generate 2.25 million gallons of raw sewage each year--as much as a city the size of Stamford, Connecticut, which has a population of more than 109,000. Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic. In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common. Still, people continue to build skyscrapers for all the reasons that they have always built them--personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space.

单选题化学学科学习的三个维度是( )。

单选题法律是维持社会秩序、调整社会关系的一种行为规范，法律的主要内容______。 A．规定人们的行为模式 B．规定人们的宗教信仰 C．规定人们的权利和义务 D．规定人们的思维方式

单选题概念与概念之间的联系是( )。

单选题传输层的主要功能是实现源主机与目的主机对等实体之间的______。 A.点—点连接 B.端—端连接 C.物理连接 D.网络连接

单选题某教师在组织学生学习某版初中语文教材九年级上册第六单元的“话说千古风流人物”这一综合性学习课题时，另辟蹊径，从挖掘地方文化资源出发，要求学生去调查当地传承下来的相关“风流人物及其故事或诗文”，并且指出学生可从以下途径去探索、搜集或发现；一是根据地名特点去寻访、探究；二是根据地方文化档案馆或地方志去查找；三是采访地方文化专家或老人，打听有关传说或记载。对于这项任务，教师要求学生利用课余时间(节假日或放学后)完成。对这位教师的做法，评价不合适的是( )。

单选题如图所示为一带正电荷的物体M靠近一不带电的金属导体N，N的左边感应出负电荷，若将N的左端接地，则()。

单选题旅客胡某投宿某饭店，办理住宿手续后，将装有贵重物品的密码箱寄存在饭店的总服务台，当班服务员清点了物品，并收取了保存费用。当胡某去取密码箱时，发现密码箱已被他人领走，胡某要求饭店赔偿全部损失，饭店拒绝，对此案的正确处理结果是______。 A．保管合同成立，饭店应赔偿胡某全部损失 B．保管合同成立，饭店应承担主要损失，胡某个人承担部分损失 C．保管合同成立，饭店酌情给予胡某补偿 D．保管合同无效，饭店酌情给予胡某补偿

单选题骨骼肌运动时，先做离心式拉长，再做向心收缩的复合式收缩形式为______。 A.等张收缩 B.等长收缩 C.等动收缩 D.超等长收缩

单选题下列著作中，中国古代科学家宋应星所写的是()。

单选题文成公主人藏和亲嫁与松赞干布，这一历史事件发生的朝代是______。