下列关于计算机系统工作原理的叙述中，哪一条是正确的 A．中央处理器直接对存储器中的数

阅读小天地：读一读，选一选。

      It's Tuesday afternoon. Jenny is going to the train station to buy tickets. She and her mother are going on

a trip to Xi'an on Thursday.

      " How much for a ticket from Beijing to Xi'an? " Jenny asks. " 120 yuan," the clerk answers.

      Now Jenny has two tickets. The train leaves at 2: 15 in the afternoon. It arrives in Xi'an at 4: 00 in the

morning. Jenny is excited (激动的). She runs home.

1. Jenny buys the tickets on ____________. 

A. Monday

B. Tuesday

C. Thursday

2. How much for the two tickets?

A. 120 yuan

B. 200 yuan

C. 240 yuan

3. Jenny and her mother want to go to ____________. 

A. Xi'an

B. Beijing

C. Nanjing

4. When does the train leave?

A. At 2: 15 in the morning.

B. At 4: 00 in the morning.

C. At 2: 15 in the afternoon.

5. How does Jenny feel now?

A. She is sad.

B. She is excited.

C. We don't know.

气管插管的拔管条件是（）

A.意识、肌力恢复

B.吞咽反射恢复

C.遵指令睁眼、开口、吞咽

D.自主呼吸恢复

E.以上均是

设备监理的执行者是( )。

A．设备监理工程师

B．总监理工程师

C．设备监理单位

D．建设单位

经济增长理论主要论述的是()。

A.投资对潜在的实际国民收入的影响

B.投资在短期内对总需求的影响

C.实际国民收入围绕潜在国民收入周期性的波动

D.某段时期结构性失业的减少

从事证券自营业务的证券公司其注册资本和净资本最低限额应达到人民币1 亿元。（ ）