问题 填空题

设有如下说明,请回答(11)~(13)小题:
有3个数据库表:
金牌榜.DBF 国家代码C(3),金牌数I,银牌数I,铜牌数I
获奖牌情况.DBF 国家代码C(3),运动员名称C(20),项目名称C(30),名次I
国家.DBF 国家代码C(3),国家名称C(20)
"金牌榜"表中一个国家一条记录;"获奖牌情况"表中每个项目中的各个名次都有一条记录,名次只取前3名,例如:

国 家 代 码运动员名称项 目 名 称名 次
001刘翔男子110米栏1
001李小鹏男子双杠3
002菲尔普斯游泳男子200米自由泳3
002菲尔普斯游泳男子400米个人混合泳1
001郭晶晶女子三米跳板1
001李婷/孙甜甜网球女子双打1

答案

参考答案:[14]UPDATE [15]SET

解析: SQL中的UPDATE命令可以实现对数据表的字段的更新操作。语句中SET子句后面的表达式指明具体的修改方法。

阅读理解

The Internationa1 Space Station allows astronauts to live in space for extended amounts of time, enabling them to explore the outside universe and conduct many experiments. However, nothing like that exists for our oceans, and thanks to the high water pressure, ocean researchers are able to explore what lies undersea for very short periods of time.

They are therefore never able to fully explore the deep inside areas of our oceans. However, if French architect Jacques Rougerie has his way, that will change soon.

Jacques has designed a ship that will allow researchers to spend a long period of time observing the sea life and conducting experiments. The huge l67ft. ship, named ‘Sea Orbiter’, consists of two areas—one above the water where the scientists and crew will live, and a lower pressurized deck (甲板), where scientists will be able to spend as much time as they wish. Since it is powered by sea currents and wind, he expects it to drift (漂流) along the oceans slowly, taking about two years to circumvent the globe.

Jacques will make their life as comfortable as possible in the ship. Besides being equipped with the latest sailing tools and communication equipment, the ship will also have a gym, a television and a DVD player! And these guys will not be eating freeze-dried food like astronauts. Instead, Jacques, an accomplished chef, plans on cooking them delicious meals every day.

The biggest problem to this giant ship is the cost, which is expected to be over $500 million—per ship! However, Jacques, who strongly believes that the secrets of our oceans may be the key to solving global warming and a vital supply for food and medicine in the future, is confident he will be able to convince governments all over the world to help out, and expects to start construction on not one, but four or five of these amazing ships soon!

小题1:Why can’t ocean researchers explore the deep oceans for a long time?

A.Because they can’t stand the high water pressure.

B.Because it’s too cold in deep ocean.

C.Because time for experiments is too limited.

D.Because it’s dangerous to observe the sea life.小题2:The underlined word “circumvent ” probably means     .

A.fly away

B.go around

C.travel through

D.move into小题3:From the fourth paragraph we can learn that     .

A.Jacques intends to design the ship mainly for sightseeing and traveling

B.living a comfortable life helps to do the ocean research quickly

C.it’s much more expensive to eat freeze-dried food

D.researchers on Jacques ’ ship will live more comfortably than astronauts小题4:In Jacques’ opinion, which of the following is not the purpose of the undersea research?

A.To find supply for food in the future.

B.To find supply for medicine in the future.

C.To draw governments’ attention to the construction of the ship.

D.To solve the global warming.小题5:Which of the fol1owing would be the best title for the text?

A.Sea Orbiter—the ship of the future

B.A new way to explore the deep oceans

C.A great architect—Jacques Rogerie

D.Travel around the globe in Sea Orbiter

单项选择题