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问题 单项选择题

胡 * * 同志2006年6月5日在中国科学院第十三次院士大会、( )第八次院士大会上发表重要讲话强调，抓紧并持之以恒地培养造就( )科技人才，是提高自主创新能力、建设创新型国家的必然要求，也是实现国家发展目标、实现中 * * 伟大复兴的必然要求。

A．中国社会科学院 高层次

B．中国工程院 创新型

C．中国社会科学院 创新型

D．中国工程院 高层次

答案

参考答案：B

解析：2006年6月5日～8日，中国科学院第十三次院士大会、中国工程院第八次院士大会在北京举行。胡 * * 同志在会议上发表重要讲话。

实验题

（15分）实验室需要0.1mol/LNaOH溶液480mL和0.5mol/L的硫酸溶液500mL。根据这两种溶液的配制情况回答下列问题。

（1）在下图所示仪器中，配制上述溶液肯定不需要的是_________（填序号），除图中已有仪器外，配制上述溶液还需要的玻璃仪器是_____                     _____。

A         B          C         D         E

（2）在容量瓶的使用方法中，下列操作不正确的是____________

A．使用容量瓶前检验是否漏水

B．配制溶液时，如果试样是固体，把称好的固体用纸条小心倒入容量瓶中，缓慢加水至接近刻度线1~2cm处，用胶头滴管加蒸馏水至刻度线。

C．配制溶液时，若试样是液体，用量筒取样后用玻璃棒引流倒入容量瓶中，缓慢加水至刻度线1~2cm处，用胶头滴管加蒸馏水至刻度线。

D．盖好瓶塞，用食指顶住瓶塞，另一只手托住瓶底，把容量瓶反复倒转多次，摇匀。（3）根据计算用托盘天平称取的质量为      g。在实验中其他操作均正确，若定容时仰视刻度线，则所得溶液浓度     0.1mol/L（填“大于”“小于”或“等于”）。

（4）根据计算得知，需用量筒量取质量分数为98%、密度为1.84g/cm3的浓硫酸的体积为       mL（保留1位小数），如果实验室有15mL、20mL、50mL量筒，应选用      mL量筒最好。

（5）配制硫酸溶液过程中，下列操作会引起结果偏高的是         （填序号）

①未洗涤烧杯、玻璃棒

②未冷却至室温就转移到容量瓶定容

③容量瓶不干燥，含有少量蒸馏水
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单项选择题

Throughout the 19th century and into the 20th, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centres of (1) , crime, poverty and moral (2) Their distrust was caused, (3) , by a national ideology that (4) farming the greatest occupation and rural living (5) to urban living. This attitude (6) even as the number of urban dwellers increased and cities became an essential (7) of the national landscape. Gradually, economic reality overcame ideology. Thousands (8) the precarious (不稳定的) life on the farm for more secure and better paying jobs in the city. But when these people (9) from the countryside, they carried their fears and suspicions with them. These new urbanities, already convinced that cities were (10) with great problems, eagerly (11) the progressive reforms that promised to bring order out of the (12) of the city.

One of many reforms came (13) the area of public utilities. Water and sewerage systems were usually operated by (14) governments, but the gas and electric networks were privately owned. Reformers feared that the privately owned utility companies would (15) exorbitant (过渡的) rates for these essential services and (16) them only to people who could afford them. Some city and state governments responded by (17) the utility companies, but a number of cities began to supply these services themselves. (18) of these reforms argued that public ownership and regulation would (19) widespread access to these utilities and guarantee a (20) price.

20（）

A.fair

B.just

C.square

D.objective
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