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【简答题】
American cities are similar to other cities around the world: American cities are changing, just as American society is changing. After World War Two, the population of most large American cities decreased; however, the population in many Sun Belt cities increase. Los Angeles and Houston are cities where population shifts (转移) to and from the city reflect the changing values of American society. In the late 1940s and early 1950s, city residents became wealthier. They moved out of their apartments in the city to buy their own homes. They bought houses in the suburbs. Now things are changing. The children of the people who left the cities in the 1950s are now adults. Many, unlike their parents, want to live in the cities. They continue to move to Sun Belt cities and older ones of the Northeast and Midwest. Many young professionals are moving back into the city. They prefer the city to the suburbs because their jobs are there; or they just enjoy the excitement and possibilities that the city offers. This population shift is bringing problems as well as benefits. Countless poor people must leave their apartments in the city because the owners want to sell the buildings or make apartments for sale instead of for rent. In the 1950s, many poor people did not have enough money to move to the suburbs; now many of these same people do not have enough money to stay in the cities. Only a few years ago, people thought that the older American cities were dying. Some city residents now see a bright, new future. Others see only problems and conflicts. One thing is sure: many dying cities are alive again. 小题1:What does the author think of cities all over the world? A.They are alive. B.They are hopeless. C.They are similar. D.They are different. 小题2: Why did American city residents want to live in the suburbs after World War Two? A.Because older American cities were dying. B.Because they were richer and needed more space. C.Because cities contained the worst parts of society. D.Because they could hardly afford to live in the city. 小题3:According to the 4 th paragraph, a great many poor people in American cities . A.are faced with housing problems B.are forced to move to the suburbs C.want to sell their buildings D.need more money for daily expenses 小题4:We can conclude from the text that . A.American cities are changing for the worse B.people have different views on American cities C.many people are now moving from American cities D.the population is decreasing in older American cities
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参考答案:
举一反三
【多选题】有关局麻药,下列叙述错误的是()。
A.
最多见的不良反应是过敏性休克
B.
利多卡因主要在肝脏被分解
C.
普鲁卡因主要由血浆胆碱酯酶分解
D.
利多卡因的单次的最大容许剂量为20mg
E.
局麻药效果在炎症区加强
【单选题】良好的饮水习惯是:()
A.
不等到口渴时主动喝水
B.
少量多次饮水
C.
饮水最好选择白开水
D.
以上都是
【单选题】碱性最强的是 ( )
A.
B.
C.
D.
D
【单选题】甲:A1、A2是互斥事件;乙:A1、A2是对立事件.那么( )
A.
甲是乙的充分不必要条件
B.
甲是乙的必要不充分条件
C.
甲是乙的充要条件
D.
甲既不是乙的充分条件,也不是乙的必要条件
【单选题】甲:A 1 、A 2 是互斥事件;乙:A 1 、A 2 是对立事件,那么(  )
A.
甲是乙的充分但不必要条件
B.
甲是乙的必要但不充分条件
C.
甲是乙的充要条件
D.
甲既不是乙的充分条件,也不是乙的必要条件
【单选题】下列那一选项不属于负反馈放大电路所改善的性能指标?( )
A.
提高闭环增益稳定性
B.
增加放大倍数
C.
拓宽通频带
D.
减小非线性失真
【单选题】有8名社交恐惧症患者,在治疗师组织下自愿参加每周1次、每次2小时的活动。互相观察、学习、体验,以调整和改善症状、发展良好的适应行为。这种心理治疗是
A.
家庭治疗
B.
集体心理治疗
C.
表达性艺术治疗
D.
精神分析治疗
【判断题】精氨酸是20种氨基酸当中碱性最强的一种氨基酸
A.
正确
B.
错误
【简答题】下列化合物中碱性最强的是( )
【单选题】下列物质中,碱性最强的是( )
A.
NaCN(HCN的Ka=6.2×10-10)
B.
HCO3-(H2CO3的Ka1=4.5×10-7, Ka2=4.8×10-13)
C.
H2PO4-(H3PO4的Ka1=6.9×10-3, Ka2=6.2×10-8, Ka3=4.7×10-11)
D.
NH3・H20(NH4+的Ka=1.1×10-6)
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