多项式4y2﹣12y+9因式分解的结果为[ ] A．（y﹣3）2 B．（2y﹣3

阅读理解。

      John is traveling by train. He is very hungry. The train stops at a small station. He wants to buy one

cake to eat very much., but it's raining hard. He wants someone to help him. A little boy is coming over

to him. John asks him to buy cakes for him. He gives the little boy one yuan and says, "Go and buy two

cakes with the money. One cake is for me, the other is for you. Can you help me?"

      The little boy is very happy and runs over to buy cakes in the rain. A few minutes later the boy comes

back and says to John," I'm sorry. I'm eating the last cake. It's delicious. Thank you very much. Here is

your fifty fen."

1. John is traveling _______.

A. by plane

B. by train

C. by bus

2. John wants to eat _______.

A. one cake

B. two cakes

C. two more cakes

3. _______ helps John to buy cakes.

A. A little boy

B. A little girl

C. A man

4. The little boy can't buy two cakes because _______.

A. there is only one cake left.

B. he doesn't like to buy two

C. John wants him to buy one

5. John is very _______.

A. happy

B. hungry

C. angry

会计记录的文字应当使用中文。在中华人民共和国境内的外商投资企业、外国企业和其他外国组织的会计记录，可以同时使用一种外国文字。

司机小王，由于曾在特警队中训练过特技驾驶，对自己的开车技术深信不疑。且自恃技术高超，经常做些"高难动作"，从未失手。一日途经一渡口时，为向朋友炫耀，违反渡口汽车应顺跳板缓行驶上渡船的规定，企图不经跳板直接从岸边"飞车上船"，结果导致汽车上船时造成渡船倾覆，小王的主观过错是( )。

A．间接故意

B．意外事件

C．疏忽大意的过失

D．过于自信的过失

简述老年期痴呆常见的病因。

为什么选择存储整合？（）

A.提升效率和降低TCO

B.简化和降低存储管理任务

C.提升存储资源的利用率

D.以上所有