微写作（10分）从下面三个题目中任选一题，按要求作答，不超过150字。① 毕业前，语

免疫放射分析方法创建者为()

A．Cooms于1941年创建

B．Berson和Yallow于1959年创建

C．Nakene和Pierce于1966年创建

D．Miles和Hales于1968年创建

E．mgrall和Perlmann于1971年创建

Being able to multitask—doing several things at the same time—is considered (考虑，认为) a welcome skill by most people. But if we consider the situation of the young people aged from eight to eighteen, we should think again.

What we often see nowadays is that young people juggle a larger number of electronic devices (电子产品) as they study. While working, they also surf on the Internet, send out emails, answer the telephone and listen to music on their iPods. In a sense, they are spending a large amount of time in fruitless efforts (努力) as they multitask.

Multitasking is even changing the relationship between family members. As young people give so much attention to their own worlds, they seem to have no time to spend with the other people around them. They can no longer greet family members when they enter the house, nor can they eat at the family table.

Multitasking also has an effect (影响) on young people’s performance at university and in the workplace. When asked about their opinions of the effects of modern gadgets (器具) on their performance of tasks, many young people gave a positive (肯定的) response (回应). However, the response from the worlds of education and business was not quite as positive. Educators feel that multitasking by children has a serious effect on later development of study skills. They believe that many college students now need help to improve their study skills. Similarly, employers (雇主) feel that young people entering the job market need to be taught all over again, as modern gadgets have made it unnecessary (没必要) for them to learn special skills to do their work.

小题1: What does the underlined word “juggle” most probably mean?

A．Want to buy.

B．Use at the same time.

C．Take the place of.

D．Search information from.小题2:In Paragraph 3, the author points out that__________.

A．family members do not greet each other

B．family members do not eat at the family table

C．young people get on well with their families

D．young people hardly communicate with their family members小题3:What’s the main idea of the last paragraph?

A．Young people must learn skills for future jobs.

B．Young people benefit (获益) a lot from modern gadgets.

C．Multitasking is an important skill to young people.

D．Multitasking influences young people’s development seriously.小题4:Which of the following is TRUE according to the passage?

A．Young people think multitasking is good for their study and work.

B．Employers consider it unnecessary for young people to be taught all over again.

C．Educators feel that young people don’t need to improve their study skills.

D．People from the world of education believe multitasking has a good effect on children’s later study skills.小题5: The author develops (阐述) the passage mainly by__________.

A．providing special examples

B．following the natural time order

C．giving out a cause and analyzing (分析) its effects

D．comparing opinions from different worlds

镍具有优良的物理和化学特性，是许多领域尤其是高技术产业的重要原料。羰基法提纯粗镍涉及的两步反应依次为：

反应Ⅰ Ni(S)+4CO(g) Ni(CO)₄(g)△H₁＜0

反应Ⅱ Ni(CO)₄(g)  Ni(S)+4CO(g) △H₂  

（1）在温度不变的情况下，要提高反应Ⅰ中Ni(CO)₄的产率，可采取的措施有        、        。

（2）已知350K下的2L密闭容器中装有100g粗镍（纯度98．5%,所含杂质不与CO反应），通入6 molCO气体发生反应Ⅰ制备Ni(CO)₄，容器内剩余固体质量和反应时间的关系如图所示，10min后剩余固体质量不再变化。

①反应Ⅰ在0～10min的平均反应速率v（Ni(CO)₄）=                 。

②若10min达到平衡时在右端得到29．5g纯镍，则反应Ⅰ的平衡常数K₁为多少？（写出计算过程）

（3）反应Ⅱ中 △H₂   0（填“＞”、“＜”、“＝”）；若反应Ⅱ达到平衡后，保持其他条件不变，降低温度，重新达到平衡时        。（双选）

a．平衡常数K增大   b．CO的浓度减小    c．Ni的质量减小    d．v_逆[Ni(CO)₄]增大

（4）用吸收H₂后的稀土储氢合金作为电池负极材料(用MH)表示)，NiO(OH)作为电池正极材料，KOH溶液作为电解质溶液，可制得高容量，长寿命的镍氢电池。电池充放电时的总反应为：

NiO(OH)+MHNi(OH)₂+M 电池充电时，阳极的电极反应式为                                 。电池充电时阴极上发生      （填“氧化”或“还原”）反应

下列各项税收法律法规中，属于部门规章的是( )。

A．《中华人民共和国个人所得税法》
B．《中华人民共和国消费税暂行条例》
C．《中华人民共和国企业所得税法实行条例》
D．《中华人民共和国消费税暂行条例实施细则》

饮水型地方性氟中毒主要是由于下列哪项而引起（）

A.食物氟污染浓度高

B.土壤中氟含量过高

C.饮水氟含量过高

D.饮水氟含量过低

E.维生素A和钙缺乏