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【单选题】
我国水资源的空间分布特点是___
A. 南丰北缺
B. 东北地区缺水最严重
C. 冬春季节少,夏秋季节多
D. 绝大部分地区水资源丰富
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相关试题
【单选题】
大气的运动变化是由什么引起的。___
A. 冷热不均
B. 水汽交换
C. 地壳运动
D. 万有引力
【单选题】
对细胞的概念,近年来比较普遍的提法是:有机体的___
A. 形态结构的基本单位
B. 形态与生理的基本单位
C. 结构与功能的基本单位
D. 生命活动的基本单位
【单选题】
自然界的生物可以分为三大类,这就是___
A. 动物、植物与微生物
B. 海洋生物、陆地生物与高山生物
C. 动物、植物与昆虫
D. 高等生物、低等生物与微生物
【单选题】
香樟是一种在长江三角洲地区常见的树种,它是属于 ___
A. 常绿针叶树种
B. 落叶针叶树种
C. 常绿阔叶树种
D. 落叶阔叶树种
【单选题】
老虎与豹是属于同一科大动物。下列动物中也属该科的是___
A. 马
B. 狼
C. 狗
D. 猫
【单选题】
生物是人类不可缺少的“朋友”,但目前正遇到___
A. 人工培育威胁
B. 种类减少威胁
C. 自相残杀威胁
D. 天外来客威胁
【单选题】
被发现在南非的古沉积岩中,地球上最早出现的绿色植物是___
A. 蕨类植物
B. 地衣
C. 蓝藻
D. 苔藓
【单选题】
植物、藻类利用叶绿素产生的光合作用过程中,在可见光的照射下,能将二氧化碳和水转化为有机物,释放出的是 ___
A. 氧气
B. 氮气
C. 氢气
D. 氯气
【单选题】
呼吸作用是生物体内的有机物在细胞内经过一系列的氧化分解,在释放出能量的同时,最终生成的主要是 ___
A. 氧气
B. 二氧化碳
C. 氮气
D. 不知道
【单选题】
晚上,植物与动物都不应该放入卧室内,要将其移到卧室外,这是因为它们会降低卧室内的___
A. 空气温度
B. 空气湿度
C. 氧气浓度
D. 氮气浓度
【单选题】
杂交优势往往在第几代杂交种子中表现最明显。___
A. 1
B. 2
C. 3
D. 4
【单选题】
以下不属于人体增强技术类型的是___
A. 短暂性增强
B. 持续性增强
C. 结构性增强
D. 内在增强
【单选题】
大陆漂移学说是由谁提出的___
A. 勒比雄
B. 魏格纳
C. 赫斯
D. 李四光
【单选题】
(1)Whieh of the following descriptions about the characteristics of physiology is wrong?___
A. It is the study of how living organisms work.
B. It illustrates the discipline of the development and the evolution of disease and the essence of disease.
C. It is to study the living phenomena and the function activities of living organs.
D. It is to explain how they are regulated and integrated.
【单选题】
(2) Which of the following are specialized in producing force and movement?___
A. muscle cells
B. connective tissues
C. nerve cells
D. epithelial cells
【单选题】
(3)The fluid environment surrounding each cell is called the___
A. intracellular fluid
B. intracellular fluid
C. internal environment
D. external environment
【单选题】
(4) Which of the following is not the fundamental characteristic of living organisms?___
A. metabolism
B. adaption
C. reproduction
D. passive diffusion
【单选题】
(5)Whicl of the following is a physiological process with negative feedback?___
A. blood coagulation
B. process of passing urine
C. sino-aortic baroreceptor reflex
D. process of parturition
【单选题】
(6)Which of the following is not the characteristic of regulation by hormone?___
A. diffusenin nature
B. longer in duration
C. accurate in action
D. action in overcorrection
【单选题】
7)Which of the following is not the characteristic of cells?___
A. They are bound by the plasma membrane
B. They have the ability to break down large molecules to smaller ones to Liberate energy for their activities
C. They possess a nucleus which contains genetic information in the form of deoxyribonucleicacid(DNA).
D. Living cells can not transform materials.
【单选题】
8)The breakdown of large molecules to smaller ones is called___
A. respiration
B. anabolism
C. catabolism
D. absorption
【单选题】
9) Which of the following descriptions about the characteristics of nervous regulation is wrong?___
A. It responds fast
B. It acts exactly
C. It responds slowly.D.
D. uration is short
【单选题】
10)Which of the following descriptions about the control of body function is wrong?___
A. Homeostasis is kept by feedback control.
B. Negative feedback minimizes the changes, leading to stability.
C. Positive feedback is not useful.
D. Feed-forward makes human body foresee and adapt itself to the environment promptly.
【单选题】
(1)Which of the following parts of knowledge of drugs should be included in pharmacology?___
A. The effects of drugs on man
B. The correlation of biological activity with chemical structure
C. The history, source, physical and chemical properties, compounding, biochemical and physiologicaleffects, mechanisms of action, absorption, distrilbution, biotransformation and excretion.
D. The prevention, recognition, and treatment of drug poisonings
【单选题】
(2)Which of the following is what a clinician is primarily interested in according to the text?___
A. Drugs which can be reasonably limited to those aspects that provide the basis for their rational clinical use
B. Chemical agents that are not used in therapy but are commonly responsible for household and industrial poisoning as well as environmental pollution
C. Drugs which are useful in the prevention,diagnosis and treatment of human disease,or in the prevention of pregnancy.
D. rugs which are useful in the prevention, diagnosis and treatment of human disease, or in the prevention of pregnancy.
【单选题】
(3)Why was the physician not interested in pharmacognosy?___
A. He didn't have to select the proper plants for his prescription
B. He had a broad botanical knowledge
C. Fewer drugs were obtained from natural sources
D. Natural drugs had little difference with synthetic ones
【单选题】
(4)Which of the following is the best way of studying pharmacology for medical students and practitioners?___
A. to have a broad botanical knowledge
B. to select a plant and its preparation
C. to have the ability to purify natural plants
D. to have curiosity that stimulates them to learn about sources of drugs
【单选题】
(5)What are the tasks related to medicines almost complete!y delegated to the pharmacists now?___
A. the physical and chemical properties of medicines
B. the preparing, compounding, and dispensing of medicines
C. dosage forms of medicines available
D. the therapeutic and other uses of medicines
【单选题】
(6) What is a main unique aspect of pharmacodynamics?___
A. Pharmacodynamics is an experimental medical science
B. Pharmacodynamics is focused on the characteristics of drugs
C. Pharmacodynamics borrows freely from both the subject matter and the experimenta techniques of physiology, biochemistry, microbiology, genetics and pathology
D. Pharmacodynamics correlates the entire field of preclinical medicine
【单选题】
7) What time of history does pharmacodynamics date back to?___
A. the second half of the seventeenth century
B. the second half of the eighteenth century
C. the second half of the nineteenth century
D. the second half of the twentieth century
【单选题】
8)What does the research on pharmacodynamics focus on?___
A. study of clinical effect of drugs
B. study of the process of drugs in the body
C. study of the effect and the mechanism of drugs on the body
D. study of the correlation of the actions and effects of drugs with their chemical structure
【单选题】
(9)Which of the following is true when drugs are selected?___
A. It has to be based in part on legal reasons.
B. It has to be based in part on ethical reasons.
C. It has to be based in part on the pharmacological evaluation in man
D. It has to be based in part on the pharmacological evaluation in animals
【单选题】
(10)Why are chemotherapeutic agents useful in therapy?___
A. They stimulate or depress biochemical or physiological function in man in a sufficiently reproducible manner to provide relief of symptoms or, ideally, to alter favorably the course of disease
B. They can produce desired effects with only tolerable undesired effects
C. They have only minimal effects on man but can destroy or eliminate parasites
D. The selectivity of their effects is one of their most important characteristics
【单选题】
1)H. Mario Geysen initially used parallel synthesis as a quick way to identify which small_____ of any given large protein bound to an antibody.___
A. division
B. pieces
C. part
D. fragment
【单选题】
2)Chemists often start a combinatorial synthesis by attaching the first set of building blocks_____ to microscopic beads made of polystyrene.___
A. solid
B. inert
C. soft
D. active
【单选题】
3)The chemical reactions required to link compounds to the beads and later to detach them____ to the synthesis proces.___
A. induce complications
B. make easy
C. introduce complications
D. introduce easy
【单选题】
4)In a parallel synthesis, all the products are_____ separately in their own reaction vessels.___
A. combined
B. assembled
C. joined
D. assorted
【单选题】
(5)In many laboratories today, robots assist with the routine work of parallel synthesis, such as small___ amounts of reactive molecules into the appropriate wells.___
A. sending
B. transporting
C. delivering
D. giving
【单选题】
(6)Scientists can pull out from the mixture the beads that bear biologically active molecules and then,using sensitive detection techniques,___ the molecular makeup of the compound attached.___
A. determine
B. make sure
C. find
D. search
【单选题】
(7)Most pharmaceutical companies today continue to___ parallel synthesis. Which of the following is not appropriate to be filled in the blank?___
A. count in
B. count on
C. depend on
D. rely on
推荐试题
【单选题】
心脏正常的起搏点是 ___
A. :窦房结
B. :房室结
C. :房室束
D. :浦肯野纤维
E. :左、右束支
【单选题】
防止血液返流到左心室的瓣膜 ___
A. :二尖瓣
B. :三尖瓣
C. :主动脉瓣
D. :肺动脉瓣
E. :动脉导管
【单选题】
二尖瓣位于 ___
A. :上腔静脉口
B. :冠状窦口
C. :右房室口
D. :左房室口
E. :下腔静脉口
【单选题】
心房与心室在心表面的分界是 ___
A. :前室间沟
B. :后室间沟
C. :冠状沟
D. :房间沟
E. :界沟
【单选题】
肺循环终于 ___
A. :右心房
B. :右心室
C. :左心房
D. :左心室
E. :冠状窦口
【单选题】
体循环起于 ___
A. :左心房
B. :右心房
C. :右心室
D. :左心室
E. :左房室口
【单选题】
腹腔干的分支包括 ___
A. :胃左动脉、肝总动脉和肠系膜上动脉
B. :肝总动脉、脾动脉和肠系膜下动脉
C. :脾动脉、胃右动脉和肠系膜上动脉
D. :胃左动脉、肝总动脉和脾动脉
E. :胃左动脉、胃网左动脉和胃短动脉
【单选题】
阑尾动脉是哪条动脉的分支 ___
A. :胃左动脉
B. :脾动脉
C. :回肠动脉
D. :回结肠动脉
E. :中结肠动脉
【单选题】
跨过输尿管前方的动脉是 ___
A. :膀胱上动脉
B. :膀胱下动脉
C. :子宫动脉
D. :阴部动脉
E. :闭孔动脉
【单选题】
含有动脉血的静脉 ___
A. :上腔静脉
B. :心大静脉
C. :下腔静脉
D. :肺静脉
E. :肝静脉
【单选题】
关于肝门静脉的描述,错误的是 ___
A. :介于两端毛细血管之间
B. :既有分支也有属支
C. :一般无静脉瓣
D. :可通过食管静脉丛、直肠静脉丛和脐周静脉网与上、下腔静脉相交通
E. :收集腹腔成对器官的静脉血
【单选题】
关于静脉注入部位的描述,错误的是 ___
A. :奇静脉注入上腔静脉
B. :肝静脉注入下腔静脉
C. :头静脉注入颈内静脉
D. :贵要静脉注入肱静脉
E. :大隐静脉注入股静脉
【单选题】
门静脉收集以下器官的静脉血,不包括 ___
A. :胃
B. :脾
C. :胆囊
D. :肾
E. :小肠
【单选题】
门静脉的属支,不包括 ___
A. :胃左静脉
B. :脾静脉
C. :附脐静脉
D. :肝静脉
E. :肠系膜上静脉
【单选题】
胸导管注入 ___
A. :左静脉角
B. :右静脉角
C. :左颈内静脉
D. :右颈内静脉
E. :右头臂静脉
【单选题】
关于脾的描述,错误的是 ___
A. :位于左季肋区,胃底与膈之间
B. :长轴与第10肋一致
C. :质软而脆,受暴力打击易破裂
D. :脾的下缘有脾切迹,是触诊脾的标志
E. :正常情况下在左肋弓下不能触及脾
【单选题】
弹性血管是指 ___
A. :大动脉
B. :中动脉
C. :小动脉
D. :微动脉
E. :大静脉
【单选题】
可使瞳孔转向外上方的是 ___
A. :上直肌
B. :外直肌
C. :上斜肌
D. :下斜肌
E. :上睑提肌
【单选题】
关于玻璃体的描述,错误的是 ___
A. :为无色透明的胶状物质
B. :位于晶状体和视网膜之间
C. :表面覆被玻璃体膜
D. :可以调节晶状体曲度
E. :对视网膜起支撑作用
【单选题】
关于房水的描述,错误的是 ___
A. :由睫状体产生
B. :由眼前房经瞳孔到眼后房
C. :经虹膜角膜角渗入巩膜静脉窦
D. :可营养眼球和维持眼压
E. :具有屈光作用
【单选题】
具有屈光作用的是 ___
A. :瞳孔
B. :脉络膜
C. :睫状体
D. :角膜
E. :巩膜静脉窦
【单选题】
关于角膜的描述,错误的是 ___
A. :外膜的前1/6
B. :无色透明
C. :血管和神经末梢丰富
D. :富有弹性,外凸内凹
E. :后缘接巩膜
【单选题】
属于眼球中膜的结构 ___
A. :巩膜
B. :睫状体
C. :视网膜
D. :角膜
E. :晶状体
【单选题】
属于平滑肌的是 ___
A. :瞳孔括约肌
B. :上睑提肌
C. :内直肌
D. :外直肌
E. :上斜肌
【单选题】
具有感光功能的结构 ___
A. :角膜
B. :虹膜
C. :晶状体
D. :视网膜
E. :视神经盘
【单选题】
无屈光功能的结构 ___
A. :角膜
B. :房水
C. :晶状体
D. :玻璃体
E. :虹膜
【单选题】
调节晶状体曲度的结构 ___
A. :虹膜
B. :巩膜
C. :角膜
D. :睫状体
E. :玻璃体
【单选题】
产生房水的结构 ___
A. :虹膜
B. :睫状体
C. :晶状体
D. :玻璃体
E. :以上都不是
【单选题】
感光最敏锐的部位 ___
A. :视神经盘
B. :视网膜周边
C. :视神经
D. :瞳孔
E. :黄斑中央凹
【单选题】
角膜含有丰富的 ___
A. :血管
B. :淋巴管
C. :感觉神经末梢
D. :色素
E. :以上都不是
【单选题】
声音传向内耳的主要途径是 ___
A. :颅骨→耳蜗内淋巴
B. :外耳道→鼓膜→听骨链→前庭窗→内耳
C. :外耳道→鼓膜→听骨链→蜗窗→内耳
D. :外耳道→鼓膜→鼓室空气→蜗窗→内耳
E. :外耳道→鼓膜→鼓室空气→前庭窗→内耳
【单选题】
关于鼓膜的说法正确的是 ___
A. :位于外耳道和中耳之间
B. :是圆形的透明膜
C. :呈深红色
D. :大部分为松弛部
E. :上方有光锥
【单选题】
不属于中耳结构的是 ___
A. :鼓室
B. :骨迷路
C. :咽鼓管
D. :乳突小房
E. :蹬骨
【单选题】
不属于膜迷路的结构 ___
A. :膜半规管
B. :椭圆囊
C. :球囊
D. :前庭
E. :蜗管
【单选题】
小儿咽鼓管的特点 ___
A. :较细长且弯曲
B. :较细短且平直
C. :较粗长且弯曲
D. :粗短且平直
E. :较细长斜向内下
【单选题】
关于鼓膜的描述,正确的是 ___
A. :位于内耳和外耳之间
B. :中心部向内凹陷为鼓膜脐
C. :紧张部在松弛部的上方
D. :前上方有反射光锥
E. :紧张部呈淡红色
【单选题】
关于晶状体的描述,正确的是 ___
A. :看远物时睫状体收缩,晶状体曲度变大
B. :前面曲度较大,后面平坦
C. :由晶状体皮质和髓质构成
D. :可因疾病或创伤发生混浊
E. :不含血管,但神经末梢丰富
【单选题】
属于听觉感受器的结构 ___
A. :壶腹嵴
B. :球囊斑
C. :椭圆囊斑
D. :螺旋器
E. :前庭神经
【单选题】
螺旋器位于 ___
A. :前庭阶
B. :鼓阶
C. :骨螺旋板
D. :基底膜
E. :蜗孔
【单选题】
黑色素细胞存在于 ___
A. :角质
B. :透明层
C. :颗粒层
D. :基底层
E. :真皮层
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