问题 填空题

在家庭电路中,开关与控制的灯          (选填“串联”或“并联”);为了防止因漏电而造成的触电事故,电冰箱的外壳应与           相连。 

答案

串联,大地(或地线);

只有将开关与所控制的电器串联,才能让开关控制电器的通断;故开关应与所控制的灯串联;

电冰箱的外壳如果漏电,人接触漏电的用电器,当有地线时,地线把人体短路,不会发生触电事故;如果没有地线,人加在220V的电源上,会发生触电,故电冰箱的外壳应与地面相连,即我们平时所说的接地.

单项选择题
阅读理解

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.