问题 单项选择题

ADO对象模型主要有Connection、Command、______、Field和Error5个对象。

A.Database

B.Workspace

C.RecordSet

D.DBEngine

答案

参考答案:C

解析:[知识点] 模块NBA程序设计基础[评析] ADO对象模型主要有Connection、Command、RecordSet、Field和Error5个对象。Connection对象:用于指定数据提供者,建立到数据源的连接。Command对象:表示一个命令。RecordSet对象:表示数据操作返回的记录集。此对象和Connection对象是最重要的两个对象。Field对象:表示记录集中的字段数据信息。Error对象:表示数据提供程序出错时的扩展信息。

阅读理解

   

D

When a storm is coming, most people leave the area as quickly as possible and head for safety…But there are a few people who will get into their cars and go straight for the center of the storm.These people are willing to risk (冒…危险) being killed by floods or 100-Kilometer- an-hour winds for the excitement of watching the storm close up.

“Storm chasing (追逐)”is becoming an increasingly popular hobby (喜好) ,especially in the Midwest of the United States, where there are frequent storms between March and July.A storm chaser begins the day by checking the Internet for the latest weather reports, and then drives up to l,000 kilometers to where the storm will be and waits for it to develop.

Although anyone can do it,storm chasing is extremely dangerous.The power of a big storm  can throw a cow into the air or destroy a whole house in seconds.Storm chasers are also often hurt in accidents caused by driving in a heavy rain.If you are a beginner, it is much safer to join a group for storm - chasing vacations during the storm season.

Even then,storm chasing is not all adventure and excitement.“Storm chasing is 95%driving,”says Daniel Lynch,who spends most of his summer storm-chasing.“Sometimes you

Can sit around for hours waiting for something to happen,and all you get is blue sky and a few light showers.”

However,for storm chasers,it is all worth it. “When you get close to a storm,it is the most exciting sight you will ever see in your life,”says Jasper Morley.“Every storm is an example of the power of nature.It is the greatest show on Earth.”

57.For storm chasing,the first thing storm chasers do is to       

A.head straight for the center of the storm   

B.get into the car for safety

C.wait patiently for the storm to develop

D.collect information about a coming storm

58.Beginners of storm chasing are advised_______

A.not to drive in a heavy rain   

B.to do it in an organized way

C.not to get too close to a storm

D.to spend more time on it in summer

59.By saying“it is all worth it”in the last paragraph,the author means that______

A.storm chasing costs a lot of money

B.storm chasing is worth hours of waiting

C.efforts in storm chasing are well paid

D.a storm presents the greatest show on Earth

60.What can we learn from the text?

A.Sometimes storm chasers get nothing but disappointment. 

B.Many storm chasers get killed in the storms.

C.Storm chasing is becoming popular around the world.

D.Storm chasing is only fit for young people

单项选择题