光导纤维的内部结构由内芯和外套组成，它们的材料不同，光在内芯中传播，则 ( )

阅读理解。

     On Nov.18th,1908,three men went up in a balloon (气球).They started early in London. The

headman was Auguste Gaudron,and the other two men were Tannar and Maitland. They had a big

balloon and they were ready for a long way.

     Soon they heard the sea. They were carrying the usual rope (绳子),and it was hanging down from

the basket of the balloon. At the end of the rope they had tied a metal box. This could hold water, or

it could be empty. So they were able to change its weight (重量). It was for use over the sea. They

were also carrying some bags of sand.

     After the sun rose, the balloon went higher. It went up to 3,000 metes, and the air was very cold.

The water in the balloon became ice. Snow fell past the men's basket, and they could see more snow

on the ground. The men tried to throw out some more sand; but it was hard. They tried to break the

icy sand with their knives, but it was not easy. The work was slow and they were still falling, so they

had to drop some whole bags of sand. One of them fell on an icy lake and made a black hole in the

ice.

     At last they pulled the box into the basket. It was still snowing; so they climbed to get away from

the snow. They rose to 5,100 metes! Everything became icy. They were so cold that they decided to

land. They came down in Poland heavily but safely. They had traveled 1,797 kilometers from London!

1.Three men flew in balloon ________. 

A. for nearly 1,800 kilometers  

B. to another city

C. to visit Poland  

D. more than a century ago

2.The metal box was used for ________.

A. carrying the bags of sand' '  

B. keeping drinking-water

C. carrying ropes of the basket  

D. changing weight

3.When the balloon went up higher,________.

A. the temperature of the balloon began to fall  

B. They saw the sun go down

C. They made a hole in the basket with their knives

D. They could see a black hole on the ground

4.The balloon landed ________.

A. in London  

B. on the sea

C. on a lake

D. in a foreign country

5.Which of the following is NOT true ________ 

A  The three men started their journey before the sun rose.

B.  The balloon began to go up when they threw bags of sand out of the basket.

C.  When they pulled the box into the basket, the balloon began to climb up.

D.  The three men had to land because they felt cold.

(二)此题是主观题，请在主观题答题卡上作答，在试卷上作答或在答题纸上作答一律无效。以下是某市文化市场办公室秘书小钱编写的一份简报稿，里面存在不少错误或不当之处，请阅读后按要求完成问题：第315期会 议 简 报2006年3 月15日XX文化市场办公室 重视下岗工人再就业扶持政策的有关问题我市XX区下岗工人甲偶然发现，近年来办考试辅导班非常热门，他觉得是个发财的好机会。于是，他找到正在某大学读博士的小舅子乙，乙曾经参加过一次某考试阅卷。乙又找了他的一老同学丙，丙曾经参加过两次该考试，因成绩不合格均未考取。二人经过密谋，公然向社会公开招收某考试辅导班学员。他们四处张贴“牛皮癣”广告，宣称将由“考试研究专家”、“考试阅卷专家”主讲，并在某报刊登招生广告。他们租用教室，每人收取报名费、听课费、讲义费共500元。同时，他们购买了一套正规出版的复习考试用书以及其他一些公开出版的复习资料，找了一家私营小印刷厂，采取非法盗印手段将购买的全套：书籍合印成一册《火速制胜教材》，又搜罗拼凑了一些散见于各种出版物中的模拟试卷，合印成一册《全真内部套题》，分别以每册80元和20元卖给学员，并在社会上公开发售。春节刚过，辅导班热热闹闹地开张了。辅导班共招收100多名考生。由于场地太小，显得拥挤不堪，担任主讲的乙、丙上课只是照本宣科，学员们感到被骗。他们找到甲要求全额退款，并要向有关部门举报。甲气急败坏，声称“是你们自己找上门来报名的，又不是我非要你们来的，你们交了钱，我开了课，我们之间就有了法定的合同关系，你们要退款，这是单方违约，你们要承担违约责任!”接到群众举报后，我有关人员上门查处，甲辩称：“我是下岗工人，国家鼓励下岗工人再创业，我自强不息，自谋生路，不管你什么法律法规，都应该对我这样的人网开一面才对。再说了，我又没搞‘黄赌毒’，没搞‘打砸抢’，我这是为社会培养人才做贡献啊!你们不让我办班，你们帮我解决吃饭问题啊”甲还声称如果对他查处，他将和家人到市政府门前静坐示威。编者按：据了解，甲平时的确生活困难。落实下岗工人再就业扶持政策，是接关系到社会稳定和发展、提高我市人民生活水平、提升我市综合竞争实力的大问题。3月1日，在本办公室主任办公会议上，刘主任在通报了甲事件后指出,本期简报反映的问题值得我们每一个人思考：下岗工人的实际生活困难我们当然要关心，如何保证执法的严肃性，维护市场秩序，又体现以人为本的现代管理理念 (钱X X供稿)报送:XXXXX,XXXXX,XXXXX,XXXXX (共印X X份)请回答以下问题：

甲的行为违反了许多现行的法律法规的规定。请列举出其中四个以上法律法规的名称。(5分)

社会经济政治生活的要求不包括（）。

A.公开

B.公正

C.公平

D.公有

公元（）年11月16日清政府决定建立新疆行省。

A.1840

B.1841

C.1844

D.1884

碳化反应CO₂浓度低会造成（）。

A、转化率降低

B、结晶大

C、塔压低

D、结晶变多