试题与答案

固定的表面污染,因为不能转移,所对对人没有任何辐射危险。()

题型:判断题

题目:

固定的表面污染,因为不能转移,所对对人没有任何辐射危险。()

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:C项:反应后溶液中是等量的NaHCO3和Na2CO3,又因为CO32—水解比HCO3—水解大(越弱越水解),故有: C(Na+)> C(HCO3—)>C(CO32—)>C(OH—)>C(H+),故错。故选C。点评:本题考查离子浓度的...

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题型:单项选择题

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题型:阅读理解

阅读理解。

     Hong Kong-The visiting Chinese gold medal winners displayed (展示) their superb sports skills again in

Hong Kong on Saturday moming, whose performance impressed over 5, 000 Hong Kong spectators (观众)

face to face as well as tens of thousands of viewers through TV live broadcasts.

     The enthusiasm (热情) for the Olympic Games was rekindled (重新点燃) in Hong Kong as Chinese

mainland's Olympic gold medal winners on Saturday made their appearances and met the public. As part of

their visit to Hong Kong, they put on demonstrations (示范) of table tennis, badminton, diving and gymnastics.

     More than 5,000 people watched their performance, while tens of thousands of viewers watched the TV

live broadcasts at home or elsewhere.

     The gold medal winners also had exchanges with young Hong Kong athletes. Some of them took part in

the sports-for-fun activities with the gold medal winners in table tennis, badminton and gymnastics.

     China' s Olympic gold medal winners arrived in Hong Kong on Friday, starting their three-day visit to the

city. 

    "I hope the Hong Kong public can use this opportunity to share the joy and pride of their country," Hong

Kong Special Administrative Region' s Chief Executive Donald Tsang said.

     All the 63 gold medal winners from the Beijing Olympic Games took part in the flag-raising ceremony at

the Golden Bauhinia Square on Saturday morning.

     After the sports demonstration, they met the public at a Gala Show at the Hong Kong Stadium on Saturday

afternoon.

     The gold medal winners will leave for Macao on Sunday afternoon after visiting Disneyland and the Ocean

Park, two of Hong Kong' s famous theme parks.

1. We learn from the text that _____.

A. Chinese mainland' s Olympic gold medal winners stayed in HK for three days

B. 5,000 people watched the TV live broadcasts at home or elsewhere

C. China' s Olympic gold medal winners left Hong Kong on Friday

D. some gold medal winners took part in the flag-raising ceremony at the Golden Bauhinia Square

2. The underlined word "superb" ( Paragraph 1) probably means _____.

A. strange

B. simple

C. excellent

D. complex

3. Which of the following is NOT the one that Chinese mainland' s Olympic gold medal winners

     put on demonstrations?

A. Gymnastics.

B. Badminton.

C. Table tennis.

D. Tennis.

4. Which city will the Chinese mainland' s Olympic gold medal winners visit next?

A. Guangzhou.

B. Macao.

C. Shanghai.

D. Tianjin.

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