市场经济产生的前提是（）。 A.私有制 B.社会分工 C.交换制度 D.货币产生

某化学实验小组做了如下实验，请回答以下问题。

 

（1）图A所示实验可观察到“铁树”上浸有无色酚酞试液的棉团由白色变为红色，该实验说明：①                        ；②                        。

（2）图B所示实验，将注射器中氢氧化钠溶液注入瓶中，会看到的现象是      ，发生反应的化学方程式为                                  。

（3）图C所示，取一朵用石蕊试液染成紫色的干燥小花，将小花用水喷湿，放入集气瓶中，观察到的现象是         ，有关的化学方程式为                   。

读图3，回答第5题。

以下四图中，与该省人口增长率变化过程基本符合的是（）。

A.A

B.B

C.C

D.D

根据《反垄断法》，下列属于国务院反垄断委员会职责的有( )。

A．对具体的经营者集中行为进行反垄断审查

B．查处价格垄断行为

C．制定并发布反垄断指南

D．处理滥用行 * * 力排除竞争的行为

Forget famous goal celebration such as “The Robot” by Peter Crouch and “The Dive” by Juergen Klinsmann, here comes the South African “Diski dance”, which is performed through heading and kicking an imaginary ball, may be a goal celebration to watch in the following matches.

South Africa's Siphiwe Tshabalala and his team mates performed this different dance when they celebrated his goal against Mexico in the opening World Cup game on Friday. The dance is already popular on YouTube and many soccer fans may want to learn the moves.

Even South Africa's President Jacob Zuma has learnt the Diski dance which could surpass Cameroon Roger Milla's corner flag dance celebration in the 1990 FIFA World Cup. U.S. actor John Travolta performed the dance shortly after landing his Boeing 707 at Lanseria airport, north of Johannesburg, on Wednesday morning.

Goal celebrations are now part of the biggest sporting event and players plan them in advance just in case they find the back of the net. In football, a goal celebration is the practice of celebrating the scoring of a goal. The celebration may be performed by the goal- scorer, his or her teammates, the manager or coaches and the supporters of the team.

The Robot goal celebration was so popular that England fans were surprised when Crouch , an English international footballer, said that he “wouldn’t be doing it any more unless England won the World Cup.”

The word Diski is a word used by the local people for soccer and may also describe the local style of football which focuses on dribbling（带球）and other tricks.

小题1:Besides “Diski Dance”, how many types of goal celebrations are mentioned in this passage?

A．2.

B．3.

C．4.

D．5.小题2:The underlined part “find the back of the net” in Paragraph 4 means               .

A．score a goal

B．win the match

C．take a rest

D．take part in a match小题3:What do we learn about the word “Diski”?

A．It has become the most popular sports word in the world now.

B．It was used to show how people were good at dribbling.

C．It was used to describe a football which was imagined by footballers.

D．It was mainly used in South Africa before the South Africa World Cup.

所谓交会法测量，就是利用（）通过计算，得到控制点的平面位置。

A.观测角

B.边长

C.两者皆是

D.都不是