问题 单项选择题

下列关于“分布式数据库系统”的叙述中,正确的是

A.分散在各节点的数据是不相关的

B.用户可以对远程数据进行访问,但必须指明数据的存储节点

C.每一个节点是一个独立的数据库系统,既能完成局部应用,也支持全局应用

D.数据可以分散在不同节点的计算机上,但必须在同一台计算机上进行数据处理

答案

参考答案:C

解析: 分布式数据库系统由一组数据组成,这组数据分布在计算机网络的不同节点上,网络上的每一个节点都具有独立的处理能力,可以执行局部应用,同时每个节点也能通过网络通信子系统执行全局应用,这样的系统称为“分布式数据库系统”。

单项选择题 A3/A4型题
完形填空

Years ago in Scotland, the Clark family had a dream. Clark and his wife worked and 36  , making plans for their nine children and themselves to travel to 37  . It had taken years, and they had 38  saved enough money and had got passports (护照) and 39 for the whole family to the United States.

The entire family was filled with 40  about their new life.  41  , seven days before their departure, the youngest son was bitten by a dog. The doctor sewed up the boy but he42     a yellow sheet on the Clarks’ front door. 43   the possibility of rabies (狂犬病), they should be quarantined (隔离) for fourteen days.

The family’s 44    was destroyed. They would not be able to make the trip to America as they had 45  . The father, filled with disappointment and 46     , hurried to the dock to watch the ship leave — without the Clark family. 47    of disappointment came to the father. Five days 48     , the tragic news spread throughout Scotland — the mighty Titanic had sunk. The unsinkable ship had sunk, 49   many lives with it. The Clark family should have been on that ship, 50   because the son had been bitten by the dog, they were51   in Scotland. When Mr. Clark heard the news, he 52    his son and thanked him for saving the family. He thanked God for saving their lives and turning 53  he had felt was a(n) 54  into a blessing.

Although we may not always understand, all things 55   for a reason.

小题1:

A.spent

B.counted

C.saved

D.played小题2:

A.America

B.Europe

C.Japan

D.Africa小题3:

A.instantly

B.obviously

C.originally

D.finally小题4:

A.cars

B.ships

C.tickets

D.rooms小题5:

A.creativity

B.excitement

C.surprise

D.imagination小题6:

A.However

B.Besides

C.Instead

D.Otherwise小题7:

A.signed

B.brought

C.hung

D.raised小题8:

A.Apart from

B.In spite of

C.As for

D.Because of小题9:

A.passport

B.ship

C.house

D.dream小题10:

A.imagined

B.planned

C.admitted

D.claimed小题11:

A.tension

B.courage

C.anger

D.doubt小题12:

A.Information

B.Tears

C.Letters

D.News小题13:

A.later

B.after

C.late

D.over小题14:

A.saving

B.leaving

C.taking

D.killing小题15:

A.so

B.or

C.and

D.but小题16:

A.left behind

B.given out

C.turned away

D.taken over小题17:

A.envied

B.called

C.blamed

D.hugged小题18:

A.when

B.what

C.that

D.why小题19:

A.sacrifice (牺牲)

B.experience

C.comedy

D.misery (痛苦)小题20:

A.remain

B.disappear

C.happen

D.exist