对于循环队列，下列叙述中正确的是______。A．队头指针是固定不变的 B．队头指针

中俄签订的第一个边界条约是 [ ]

A．《爱珲条约》

B．《尼布楚条约》

C．《北京条约》

D．《中俄勘分西北界约记》

判断题（共5题，10分）（正确的写T错误的写F）

1.春秋时期主要的霸主有齐桓公、晋文公、楚庄王、秦孝公等。

2.1953年——1957年第一个五年计划的完成，标志着中国工业化实现。

3.1776年的《独立宣言》被马克思称为“人类历史上第一个 * * 宣言”。它的颁布标志了美国独立。

4.国际关系格局变动的根源是各国矛盾不可调和。

5.被誉为“中国凯旋门”的抗日战争受降纪念坊，位于湖南怀化芷江七里桥。

雌蕊的组成包括花柱，子房和胚珠三部分。 [ ]

BRISBANE—Australian Olympic chief John Coates has said Greek athlete Katerina Thanou should not be awarded the Sydney Olympics 100 metres gold medal handed back by Marion Jones.

Jones, who this week admitted to steroid（类固醇）use in the build up to the Sydney Games, has returned the three gold medals and two bronzes she won in 2000.

But Thanou, the silver medalist in Sydney, was herself banned for two years after she failed to appear for a drug test at the 2004 Athens Olympics.

“I’d like to think that Katerina Thanou would not be awarded the gold medal,” Coates told the Australian Associated Press on Tuesday, “but there may be some legal difficulties for the International Olympic Committee (IOC) to overcome in order to reach that conclusion.”

Jamaica’s Tayna Lawrence won the 100m bronze medal in Sydney behind Jones and Thanou.

Coates also said he expected the United States Olympic Committee (USOC) to hand back the medals won by the women's 4x100m and 4x400m relay teams.

Two of Jones’s team mates in the 4x100m team which finished third in Sydney, Torri Edwards and Chryste Gaines, have also served doping（兴奋剂）bans.

The U.S. women’s 4x100m relay team won the gold medal ahead of Jamaica and Russia.

“On the relays, it’s my expectation that the United States Olympic Committee will be required to also hand back the medals won by the other ladies who competed with Jones in the two relays,” Coates said.

“That is normal practice.”

The United States Olympic Committee (USCO) has publicly apologized to the organizers and competitors of the 2000 Sydney Games and the Australian public for Jones’s actions.

As part of the USOC’s apology, president Peter Ueberroth promised that the U.S. would send a clean team to next year’s Beijing Olympics.

1. What is the best title of the passage?

A. Jones has returned the Sydney medals

B. Thanou should not receive Sydney gold

C. Steroid use at Sydney Olympics

D. The U.S would send a clean team to Beijing Olympics.

2. Thanou should not get the Sydney gold medal because________.

A. she didn’t pass the drug test.

B. she served doping ban at Sydney Olympics.

C. she didn’t take the drug test at Sydney Olympics.

D. she ran second at Sydney Olympics.

3. Which of the following statements is True?

A. Jones has got five gold medals at Sydney Olympics.

B. The USCO has returned medals in the two relays.

C. Thanou should receive Sydney gold medal.

D. Jones also took part in the women’s 4x100m relay race.

4. Why did Coates expect the USOC to hand back the medals won in the relay races?

A. Because the IOC required them to do so.

B. Because they didn’t take the first place in the relay races.

C. Because some of the runners of the U.S served doping bans.

D. Because they felt sorry for Jones’s actions.

5. What would probably happen next according to the passage?

A. Thanou would receive Sydney gold.

B. Jamaica’s Tayna Lawrence would receive Sydney gold.

C. Thanou wouldn’t be allowed to take part in the Beijing Olympics.

D. Fewer or no American athletes will serve doping drugs in Beijing Olympics.

虚拟局域网VLAN可根据以下哪些方式划分（）

A、根据端口划分VLAN；

B、根据MAC地址划分VLAN；

C、根据网络层（IP地址）划分VLAN；

D、IP组播作为VLAN。