【名词&注释】
有丝分裂(mitosis)、生产规模(production scale)、封建社会(feudal society)、虚拟空间(virtual space)、名副其实(genuinely)、叶绿体色素(chloroplast pigment)、城市布局(city layout)、先后顺序、电信技术(telecommunication technology)、虫媒传粉(insect pollination)
[单选题]合点受精是指双受精发生在合点处。( )
A. 正确
B. 错误
查看答案&解析
举一反三：
[单选题]枝蔓状城市----以城市边缘化和信息技术、虚拟技术为特征的后现化城市，将既不会是奴隶社会的“城堡式”城市，也不会是封建社会的“城池式”城市，当然也会与现代工业社会高楼耸立的中心化城市相区别。在枝蔓状城市布局(city layout)中，即使是眼下北京绞尽脑汁建造起来的多层环状结构也将大不适应。中心化城市的各种弊端，诸如交通堵塞、人口拥挤、环境污染、空气浑浊、疾病易于传播、犯罪案件增多、居住环境恶化、管理难度增加和公众空间锐减等，限制了城市的进一步发展。而现代高科技可以自由地用虚拟空间、网络空间取代地理空间或物理空间，因此，人们也就没有必要再拥挤在一个地域。于是自然而然就开始了从市区向市郊的转移，许多工厂、学校、研究机构都迁向市郊。市区再也没有工厂和生产基地，而变成纯粹的物质交换和消费的场所。又由于信息技术、网络技术、电信技术(telecommunication technology)的发展，中心化城市的传统布局被彻底打散。
A. 现在世界各地迅速崛起许多边缘城市，就属于中心化城市的后现代演变。中心化城市逐渐演变为主城市和边缘城市。主城市和边缘城市相互联系、相互作用而又各自独立，它们更多的是经济、文化和教育上的紧密联系。城市的边缘化，就是城市由中心向四周的蔓延与扩展，扩展到与非城市区域相接壤的既是城市又是乡村的地区。这里，现代商业交易和办公活动也走向郊区化、边缘化。生产规模、生产程序、劳动力市场和销售状况呈分散状。主城市与边缘城市通过铁道、地铁、高速公路、航空路线等组成的多模式运输系统以及卫星天线进行沟通。
B. 这种城市的边缘化在许多发达国家已经形成规模，比如今天的美国就已经形成大洛杉矶都市区以及波士顿—劳伦斯—洛厄尔、旧金山—奥克兰—圣何塞等都市区。它们还会进一步向周边地区扩展，通过原料网、生产网、销售网、消费网、信息网和电脑网的连接而延伸到整个地球，成为名副其实的全球化城市。
C. 5.下列对于“枝蔓状城市”的理解不准确的一项是
D. 以城市边缘化和信息技术、虚拟技术为特征的后现代城市
E. 没有工厂和生产基地，成为纯粹的物质交换和消费场所的城市
F. 彻底打散中心化城市的传统布局，利用各种网络相互连接的城市
G. 相互联系、相互作用而又各自独立，在经济、文化和教育上联系紧密的城市
[单选题]含有a mol FeBr2的溶液中，通入x mol Cl2。下列各项为通Cl2过程中，溶液内发生反应的离子方程式，其中不正确的是
A. x＝0.4a，2Fe2++Cl2＝2Fe3++2Cl-
B. x＝0.6a，2Br－+ Cl2＝Br2+2Cl－
C. x=a，2Fe2＋+2Br－+2Cl2＝Br2+2Fe3＋+4Cl－
D. x=1.5a，2Fe2＋+4Br－+3Cl2＝2Br2+2Fe3＋+6Cl－
[单选题]DNext time a customer comes to your office, offer him a cup of coffee. And when you’re doing your holiday shopping online, make sure you’re holding a large glass of iced tea. The physical sensation(感觉) of warmth encourages emotional warmth, while a cold drink in hand prevents you from making unwise decisions—those are the practical lesson being drawn from recent research by psychologist John
A. Bargh.
B. Psychologists have known that one person’s perception(感知) of another’s “warmth” is a powerful determiner in social relationships. Judging someone to be either “warm” or “cold” is a primary consideration, even trumping evidence that a “cold” person may be more capable. Much of this is rooted in very early childhood experiences, Bargh argues, when babies’ conceptual sense of the world around them is shaped by physical sensations, particularly warmth and coldness. Classic studies by Harry Harlow, published in 1958, showed monkeys preferred to stay close to a cloth “mother” rather than one made of wire, even when the wire “mother” carried a food bottle. Harlow’s work and later studies have led psychologists to stress the need for warm physical contact from caregivers to help young children grow into healthy adults with normal social skills.
C. Feelings of “warmth” and “coldness” in social judgments appear to be universal. Although no worldwide study has been done, Bargh says that describing people as “warm” or “cold” is common to many cultures, and studies have found those perceptions influence judgment in dozens of countries.
D. To test the relationship between physical and psychological warmth, Bargh conducted an experiment which involved 41 college students. A research assistant who was unaware of the study’s hypotheses(假设), handed the students either a hot cup of coffee, or a cold drink, to hold while the researcher filled out a short information form. The drink was then handed back. After that, the students were asked to rate the personality of “Person A” based on a particular description. Those who had briefly held the warm drink regarded Person A as warmer than those who had held the iced drink.
E. “We are grounded in our physical experiences even when we think abstractly,” says Bargh.
F. 51. According to Paragraph 1, a person’s emotion may be affected by ______.
G. the visitors to his office
H. the psychology lessons he has
I. his physical feeling of coldness
J. the things he has bought online
[单选题]下列对有关实验的叙述，正确的是
A. 在观察洋葱细胞有丝分裂实验中，将已经解离、漂洗、染色的根尖置于载玻片上，轻轻盖上盖玻片后即可镜检
B. 对酵母菌计数时，用吸管吸取培养液滴满血球计数板的计数室及其四周边缘，轻轻盖上盖玻片后即可镜检
C. 在叶绿体色素提取实验中，研磨绿叶时应加一些有机溶剂，如无水乙醇等
D. 检测试管中的梨汁是否有葡萄糖，可加入适量斐林试剂后，摇匀并观察颜色变化
[单选题]42______. A, mysterious
A. ridiculous
B. fascinating
C. apparent
[单选题]毛茛属(Ranunculus)花瓣基部有一蜜腺穴，为虫媒传粉(insect pollination)的标志之一。( )
A. 正确
B. 错误
[单选题]子叶出土幼苗种子萌发时( )。
A. 上胚轴伸长
B. 胚芽伸长
C. 下胚轴伸长
D. 胚轴不伸长
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