(12分)如图所示，水平转台高1.25m，半径为0.2m，可绕通过圆心处的竖直转

简述战略目标决策的内容。

关于操作系统的叙述哪一个是不正确的

A．管理资源的程序

B．管理用户程序执行的程序

C．能使系统资源提高效率的程序

D．能方便用户编程的程序

由于不执行或不认真执行勾挑核对制度，造成邮件无着落的，应追究（）责任。

A、接发人员

B、收寄人员

C、投递人员

D、相关人员

A gray sweater hung limply on Tommy’s empty desk, a reminder of the depressed boy who had just followed his classmates from our third-grade room. Soon Tommy’s parents, who had recently separated, would arrive for a conference on his failing schoolwork and disruptive behavior. Neither parent knew that I had invited the other.

Tommy, an only child, had always been happy, cooperative and an excellent student. How could I convince his father and mother that his recent failing grades represented a broken-hearted child's reaction to his loved parent’s separation and divorce?

Tommy's mother entered and took one of the chairs I had placed near my desk. Soon the father arrived. Good! At least they were concerned enough to be on time. A look of surprise and anger passed between them, and then they pointedly ignored each other.

As I gave a detailed account of Tommy's behavior and schoolwork, I prayed for the right words to bring these two together, to help them see what they were doing to their son. But somehow the words wouldn't come. Perhaps if they saw one of his spotted, carelessly done papers.

I found a crumpled（压皱的）tear-stained sheet stuffed in the back of his desk, an English paper. Writing covered both sides—not the assignment, but a single sentence scribbled（潦草地写） over and over.

Silently I smoothed it out and gave it to Tommy's mother. She read it and then without a word handed it to her husband. He frowned. Then his face softened. He studied the scribbled words for a long time.

At last he folded the paper carefully, placed it in his pocket, and reached for his wife's outstretched hand. She wiped the tears from her eyes and smiled up at him. My own eyes were brimming(湿润的), but neither seemed to notice. He helped her with her coat and they left together.

In his own way God had given me the words to reunite that family. He had guided me to the sheet of yellow copy paper covered with the anguished outpouring（流露） of a small boy's troubled heart.

The words, "Dear Mother ... Dear Daddy ... I love you ... I love you ... I love you."

1. Which of the following word has the closest meaning to the word “disruptive”（Line3,Para.1）  mean?

A. terrible         B. careless         C. cheerful             D. good

2. What caused Tommy’s failing behavior and schoolwork fundamentally?

A. His parents’ ignorance of his education.

B. His parents’ separation and divorce.

C. His parents’ lacking love to him.

D. His parents’ firm administration to him.

3. What helped Tommy’s parents see their influence on their son?

A．A single sentence on a sheet of paper in his desk.   

B．Tear stains on Tommy’s papers.

C．Tommy’s disruptive behavior.       

D．A gray sweater.

4. You can infer from the passage that_________.

A. The teacher found suitable words to persuade Tommy’s parents reunite.

B. Tommy’s love to his parents saved their marriage and the whole family.

C. Tommy’s parents scheduled their time to come to school together.

D. A broken family might cause a child’s bad behavior and his shortage of love for others.

用“  ”和“  ”分别代表两种不同的单质分子A₂和B₂，它们在一定条件下能发生化学反应，其反应的微观示意图如下，请回答下列问题：

（1）上图中有_________种原子，___________种分子．

（2）上图所表示的物质中，属于混合物的是_______（写图示编号）．

（3）该反应的基本类型为________．

（4）参加反应的A₂与生成物分子的个数比为_____________．

（5）依据此图，从微观角度揭示化学反应的本质为____________．

（6）写出生成物的化学式____________．