固结灌浆作用是提高基岩强度和整体性，降低地基的透水性。（）

（7分）某工厂现有含少量铁屑的铜屑废料。某校九（5）班化学兴趣小组的同学欲从中回收铜，他依据“绿色化学”的思想设计了两种方案：

方案Ⅰ(物理方法)：将磁铁接触铁屑和铜屑混合物，铜和铁分别得到回收……

方案Ⅱ (化学方法): 过程如下：

①操作A的名称是      ，完成该操作需要的玻璃仪器有烧杯、漏斗和         ；

②B可能为 ___________；写出相关的化学方程式_____________________________；

③确定给铁屑和铜屑加入的B已经过量的方法有：___________________         。

④该方案体现绿色化学的思想有：铜得到了回收，                            。

四、阅读理解：（共20小题；每小题1.5分，满分30分）

A

Steve and Yaser first met in their chemistry class at an American university. Yaser was an international student from Jordan. He was excited to get to know an American. He wanted to learn more about American culture. Yaser hoped that he and Steve would become good friends.

At first, Steve seemed very friendly. He always greeted Yaser warmly before class. Sometimes he offered to study with Yaser. He even invited Yaser to have lunch with him. But after the term was over, Steve seemed more distant. The two former(以前的) classmates didn’t see each other very much at school. One day Yaser decided to call Steve. steve didn’t seem very interested in talking to him. Yaser was hurt by Steve’s change of attitude. “Steve said we were friends,” Yaser complained. “And I thought friends were friends forever.”

Yaser is a little confused. He is an outsider(局外人) to American culture. He doesn’t understand the way Americans view friendship. americans use the word “friend” in a very general way. They may call both casual acquaintaneces(熟人) and close companions(伙伴) “friends”. americans have school friends, work friends, sports friends and neighborhood friends. These friendships are based on common interests.

Studies show that one out of five American families moves every year. American frienships develop quckly, and they may change just as quickly.

People from the United States may at first seem friendly. Americans often chat easily with strangers. They exchange information about their families, hobbies and work. They may smile warmly and say, “Have a nice day.” or “see you later.” schoolmates may say, “Let’s get together sometime.” But American friendliness is not always an offer of true friendship.

41. Why didn’t Yaser understand Steve was more was more distant with him when they were no longer in the same class?

A. Because Steve no longer likes Yaser.

B. Because they couldn’t see each other.

C. Because Yaser didn’t know american culture about friendship.

D. Because Yaer was a foreigner.

42. From the text we can find that American friendships ________.

A. develop quickly but change slowly           B. develop slowly and change slowly

C. develop slowly but change quickly           D. develop and change quickly

43. From the text we may know that Americans are ________.

A. kind               B. rude              C. sad               D. impolite

44. If you no longer work with an american, what should you do with your friendship?

A. Try your best to keep it.                    B. Avoid meeting your workmates.

C. Let it be.                                D. worry about it.

肾性急性肾功能衰竭最常见的原因是（）

A.急性肾小球肾炎

B.肾血管性疾病

C.急性间质性肾炎

D.急性肾小管坏死

E.慢性肾脏疾病的急性发作

山东嘉祥武梁祠的建造年代是：（）

A.西汉前期

B.西汉后期

C.东汉前期

D.东汉后期

关于多发性硬化治疗不恰当的描述是（）

A.皮质类固醇是多发性硬化急性发作和复发的主要治疗药物，可加速急性复发的恢复和缩短复发期病程，但不能改善恢复程度

B.长期应用皮质类固醇不能防止复发，且可出现严重不良反应

C.继发进展（SP）型MS皮质类固醇无效，可选用免疫抑制剂

D.对原发进展型MS，采用特异性免疫调节治疗无效，主要是对症治疗，血浆置换对暴发病例可能有用

E.金刚烷胺对尿潴留可能有用