适合原型化开发的准则很多，下列不是有效的准则的是A．自行设计报表生成 B．使用熟悉的

任务型阅读。

     阅读下面这篇文章,请将标有A-E 的段落插入文章中标号为1-5 的合适位置,使这篇文章意义完整,结构连贯。

   She is widely seen as proof that good looks can last forever. But, at nearly 500 years of age, time is

catching up with the Mona Lisa. 

   1     

     "The thin, wooden panel (面,板) on which the Mona Lisa is painted in oil has changed shape since

experts checked it two years ago," the museum said.   2   

    3   "It is very interesting that when you're not looking at her, she seems to be smiling, and then you

look at her and she stops," said Professor Margaret Livingstone of Harvard University. "It's because

direct vision (视觉) is excellent at picking up detail, but less suited to looking at shadows. Da

Vincipainted the smile in shadows."

     However, the actual history of the Mona Lisa is just as mysterious as the smile.      4   

     In 1911, the painting was stolen from the Louvre by a former employee, who took it out of the museum

hidden under his coat. He said he planned to return it to Italy. The painting was sent back to France two

years later.

    5   

A. Nearly 6 million people go to see the Mona Lisa every year, many attracted by the mystery

     of her smile.

B. This picture is now so valuable that no one can tell its exact price. Therefore, many thieves

     tried to steal it in any way they could think of.

C. Visitors have noticed the changes but repairing the world's most famous painting is not easy.

D. Experts are not sure about the materials the Italian artist used and their current chemical  state.

E. Da Vinci himself loved it so much that he always carried it with him, until it was eventually sold

     to France's King Francis I in 1519.

F. The health of the famous picture, painted by Leonardo Da Vinci in 1505, is getting worse by

     the year, according to the Louvre Museum (卢浮宫博物馆) where it is housed.

G. During World War II , French hid the painting in small towns to keep it out of the hands of

     German forces. Like many old ladies, the Mona Lisa has some interesting stories to tell.

（15分）Ⅰ．某实验小组把CO₂通入饱和Na₂CO₃溶液制取NaHCO₃，装置如图所示（气密性已检验，部分夹持装置略）：

（1）请结合化学平衡移动原理解释B中溶液的作用                      。

（2）当D中有大量白色固体析出时，停止实验，将固体过滤、洗涤，取一定量配成样液，并加入BaCl₂溶液，出现白色沉淀并有气体产生，其离子方程是                                     。

Ⅱ．某课外活动小组欲利用氨气与CuO反应，研究氨气的性质并测其组成，设计了如下实验（夹持装置未画出）进行实验。请回答下列问题：

（1）仪器b中可选择的试剂为（任意填一种）_____________。

（2）实验中，装置C中黑色CuO粉末全部转化为红色固体（已知Cu₂O也为红色固体），量气管中有无色无味的气体。实验前称取黑色CuO 80g，实验后得到红色固体质量为68g。则红色固体成分的化学式为_______________。

（3）F中读取气体体积前，应向上或向下移动右管，使得左右两边液面相平，若无此操作，而F中左边液面低于右边液面，会导致读取的气体体积________ （填“偏大”或“偏小”或“无影响”）。

（4）要想测得氨气分子中氮、氢原子个数比，实验中应至少测量或读取哪些数据________（填序号）。

a．B装置实验前后质量差mg；     b．F装置实验前后液面差VL

c．D装置实验前后质量差mg；     d．E装置实验前后质量差mg；

（5）E装置中浓硫酸的作用是__________________________________________。

球部 * * 损伤后最有特征性的症状是（）

A.初始血尿

B.终末血尿

C.全程血尿

D. * * 溢血

E.会阴部肿痛

当索赔事件持续进行时，承包方应( )。

A．视影响程度，不定期地提出中间索赔报告

B．在事件终了后，一次性提出索赔报告

C．阶段性发出索赔意向通知，索赔事件终止后28天内，向工程师提供索赔的有关资料和最终索赔报告

D．阶段性提出索赔报告，索赔事件终止后14天内，向工程师提供索赔的有关资料

民事诉讼中，由人民法院指定举证期限的，指定的期限不得少于_______。

A．7 日
B．15日
C．30 日
D．60 日