联系我国实际，论述区域经济差异存在的必然性和区域经济差异可以进行的有限度的调控。

阅读理解。

    The Beijing Olympic Games are getting closer and closer. Are you looking forward to the excitement

ahead? To cheering on stars like Yao Ming and Liu Xiang?

    On April 15, more than 7 million tickets went on sale. If you can use the Internet, go to

www.tickets.beijing2008.cn., Or you can go to the Bank of China to book a ticket. But there's no hurry.

Any time before June 30, you can book a ticket to the opening and closing ceremonies. You can also order

tickets to 28 sports events including basketball, football and swimming.

    Whether you book tickets early or on the last day, you have an equal chance of getting one. If too many

people want to see the same event, a computer will decide who are the lucky ones. You may worry that

your pocket money will not be enough for a ticket. But the fact is tickets to the games are cheap. What's

more, students can get even cheaper tickets-for 10 yuan or less.

    Tickets for your parents aren't expensive, either. More than half are 100 yuan or less. The most expensive

tickets cost 5,000 yuan. They are for the opening ceremony. It will be held on August 8, 2008.

1. When will the Beijing Olympic Games start? [ ]

A. On August 8, 2008.

B. On April 15, 2008.

C. On June 30, 2008.

D. We don't know.

2. Which of the following is NOT true? [ ]

A. Yao Ming and Liu Xiang are world-famous Chinese athletes.

B. You can buy the tickets either in Bank of China or on the Internet.

C. The earlier you book the tickets, the more chances you have of getting them.

D. You can buy tickets any time before June 30.

3. If there are not enough tickets to the same event and you are lucky to get one, whom will you thank? [ ]

A. The tickets company.

B. The computer.

C. The Olympic Committee.

D. The government.

光合作用的要素包括（）。

A、必须有CO₂、H₂O、叶绿素、光能和适宜的温度

B、有CO₂和H₂O就行

C、有叶绿素和光能就行

D、有CO₂和叶绿素就行

关于新生儿体温及调节，以下哪些是不正确的（）

A.通过寒战反应产热

B.棕色脂肪分解产热

C.体温调节机制发育不全，体温易下降

D.新生儿麻醉时应采取保温措施

E.核心温度为机体活动最适宜温度

库房内保管的（）等物品，要实行分区管理，并按种类，券别陈放整齐。

A.现金。

B.贵金属。

C.有价单证。

D.柜员现金箱。

路由器Console端口默认的数据速率为 。

A．2400b/s
B．4800b/s

C．9600b/s
D．10Mb/s