苗族舞蹈以( )最为普及。 A.芦笙舞 B.赛乃姆 C.板凳舞 D.夏地亚纳

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问题:

苗族舞蹈以( )最为普及。

A.芦笙舞

B.赛乃姆

C.板凳舞

D.夏地亚纳

考点:导游资格考试导游基础知识导游基础知识
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三点式振荡器的原则是什么?

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根据下列句子的意思及中文提示,写出各空缺处各单词的正确形式。

小题1:Please _____(给)me a piece of cake.

小题2:How_____(大)it is raining.  Let’s wait until it stops.

小题3:He spent too much time _____(看)newspaper last night.

小题4:This is not my CD player. It's_________(她的).

小题5:There are________(五十 )students in my class.

小题6:Mike's schoolbag is_______(在……下面)the tree.

小题7:It even snowed here in________(三月 )this year.

小题8:Jim is good at sports. He________(跑) fastest in his class.

小题9:My uncle is________(忙)planting trees near the river.

小题10:I'm going to the post office. Will you________(借出)me your bike?

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III 、阅读理解

London Thursday July 26 (Reuters)---Ian Johnstone missed his girlfriend so much that he flew back to Britain from Australia to propose to her(向……求婚). The problem is that she flew in the opposite direction.

He and Amy Dolby could even have met each other when they sat in the same airport waiting-room in Singapore at the same time to wait for connecting flights(航班).

Dolby, heartbroken when she arrived at Johnstine’s Sydney apartment to find he had flown to London, told the times: “It was as though someone was playing a cruel joke on us. He is the most romantic(浪漫的) person I have ever known. I think our problem is that we are both quite impulsive(冲动的)people. We are always trying to surprise each other.”

After an 11,000-mile flight across the globe, she was greeted by Johnstone’s astonished flat mate asking what she was doing there.

“The terrible truth dawned (明朗)when I found that Ian’s suitcase and most of his clothing were missing. I sat on the end of his bed and cried my eyes out. And that really made me angry,” she said.

Johnstone, a 27-year-old bricklayer, had taken a year off to travel around Australia. But he was missing Dolby, a 26-year-old secretary, so much he got a job on a Sydney building site(建筑工地)and started saving for surprise.

He then flew home to Britain and went to her apartment armed with an engagement ring(订婚戒指), champagne(香濱酒) and flowers.

“I really missed Amy and I had been thinking about her all the time. I thought she was winding me up when she phoned me from Australia,” he said.

Johnstone then asked Dolby to marry him on the phone. “I didn’t know whether to laugh or cry but I accepted,” she said.

Dolby was given a short tour of Sydney by Johnstone’s friends and Johnstone had to stay in Britain for two weeks because he could not change his ticket.

1. It can be learned from the text that_______.

A. Dolby was heartbroken when she heard Johnstone refused to see her.

B. Johnstone worked in Sydney and went to Britain on business

C. Dolby was greeted by Johnstone’s flat mate at the airport

D. Johnstone failed to see Dolby in her apartment in Britain

2. According to the text, it seemed that_______.

A. Dolby wanted to go sightseeing in Sydney alone

B. Johnstone and Dolby could have seen each other in Singapore

C. Dolby stayed longer in Sydney than Johnstone stayed in Britain

D. the young lovestruck couple had both intended to propose to each other

3. When Johnstone asked her to marry him on the phone, Dolby felt_______.

A. nervous and shy                B. cheerful and angry

C. excited and shocked             D. confused and sad

4. Which of the following shows the right order of what happened in the text?

a. Johnstone flew back to Britain to propose to his girlfriend, Amy Dolby.

b. Johnstone started working at a Sydney building site.

c. Johnstone went to Amy’s apartment in Britain with an engagement ring.

d. Johnstone proposed to Dolby over the phone.

e. They were waiting for their connecting flight in the airport lounge in Singapore.

f. Dolby called Johnstone from Australia.

A. b-a-d-e-c-f      B. c-a b-e-f-d       C. b-a-e-c-f-d      D. b-a-f-e-c-d

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溴化钙可用作阻燃剂、制冷剂,具有易溶于水,易吸潮等性质。实验室用工业大理石(含有少量Al3+、Fe3+等杂质)制备溴化钙的主要流程如下:

完成下列填空:

(1)上述使用的氢溴酸的质量分数为26%,若用47%的氢溴酸配置26%的氢溴酸的氢溴酸500ml,所需的玻璃仪器有玻璃棒、                。

(2)已知步骤Ⅲ的滤液中不含NH4+。步骤Ⅱ加入的试剂a是        ,控制溶液的pH约为8.0的目的是         、           。

(3)试剂b是         ,步骤Ⅳ的目的是                 。

(4)步骤Ⅴ所含的操作依次是                 、            。

(5)制得的溴化钙可以通过如下步骤测定其纯度:

①称取4.00g无水溴化钙样品;②溶解;③滴入足量Na2CO3溶液,充分反应后过滤;④    ;⑤称量。若得到1.88g碳酸钙,则溴化钙的质量分数为                   (保留两位小数)。

若实验操作规范而测定结果偏低,其原因是                 。

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下列说法正确的是()。(填正确答案标号。选对1个得3分,选对2个得4分,选对3个得6分。每选错1个扣3分,最低得分为0分)

A、用光导纤维束传输图像和信息,这是利用了光的全反射原理

B、紫外线比红外线更容易发生衍射现象

C、经过同一双缝所得干涉条纹,红光比绿光条纹宽度大

D、光的色散现象都是由于光的干涉现象引起的

E、光的偏振现象说明光是一种横波

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