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Part ADirections: Read the following four texts. Answer the questions below each text by c

Part A

Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)

Like the look of our website? Whatever the answer, the chances are you made your mind up within the first twentieth of a second. A study by researchers in Canada has shown that the snap decisions Internet users make about the quality of a web page have a lasting impact on their opinions.

We all know that first impressions count, but this study shows that the brain can make flash judgments almost as fast as the eye can take in the information. "My colleagues believed it would be impossible to really see anything in less than 500 milliseconds", says Gitte Lindgaard of Carleton University in Ottawa. Instead they found that impressions were made in the first 50 milliseconds of viewing.

Lindgaard and her team presented volunteers with the briefest glimpses of web pages previously rated as being either easy on the eye or particularly unpleasant, and asked them to rate the websites on a sliding scale of visual appeal. Even though the images flashed up for just 50 milliseconds, roughly the duration of a single frame. of standard television shot, their decisions tallied well with judgments made after a longer period of examination.

In the crowded and competitive world of the web, companies hoping to make millions from e-commerce should take notice". Unless the first impression is favorable, visitors will be out of your site before they even know that you might be offering more than your competitors", Lindgaard warns.

For a typical commercial website, 60% of traffic comes from search engines such as Google. This makes a user's first impression even more critical. The lasting effect of first impressions is known to psychologists as the "halo effect": if you can snare people with an attractive design, they are more likely to overlook other minor faults with the site, and may rate its actual content more favorably.

This is because of "cognitive bias". People enjoy being right, so continuing to use a website that gave a good first impression helps to "prove" to themselves that they made a good initial decision. "It's awfully scary stuff, but the tendency to jump to conclusions is far more widespread than we realize".

These days, enlightened web users want to see a "puritan" approach. It's about getting information across in the quickest, simplest way possible. For this reason, many commercial websites now follow a fairly regular set of rules. For example, westerners tend to look at the top-left corner of a page first, so that's where the company logo should go. And most users also expect to see a search function in the top right.

Of course, the other golden rule is to make sure that your web pages load quickly, otherwise your customers might not stick around long enough to make that coveted first impression. "That can be the difference between big business and no business".

The study in the text has shown that the first impression of a website is ______

A.made within a period when the eyes even cannot really catch anything.

B.not possible to be created in less than half a second.

C.able to be made in 1/20 of a second.

D.usually related to the articles of the website.

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更多“Part ADirections: Read the following four texts. Answer the questions below each text by c”相关的问题

第1题

在SQL Server 2008中,设用户U1是某数据库db_datawriter角色中的成员,则U1在该数据库中有权执行的
操作是()。

A.SELECT

B.SELECT和INSERT

C.INSERT、UPDATE和DELETE

D.SELECT、INSERT、UPDATE和DELETE

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第2题

在SQL Server 2008中,设U1用户在某数据库中是db_datawriter角色中的成员,则该用户U1从该角色中可
以获得的数据操作权限是()。1.查询Ⅱ.插入Ⅲ.更改Ⅳ.删除

A.仅Ⅰ

B.仅Ⅰ和Ⅱ

C.仅Ⅱ、Ⅲ和Ⅳ

D.全部

点击查看答案

第3题

在SQL Server 2008中,设ul用户在某数据库中是db­;_datawriter角色中的成员,则用户U1从该角色
中可以获得的数据操作权限是()。Ⅰ.查询Ⅱ.插入Ⅲ.更改Ⅳ.删除

A.仅Ⅰ

B.仅Ⅰ和Ⅱ

C.仅Ⅱ、Ⅲ和Ⅳ

D.全部

点击查看答案

第4题

在SQL Server 2000中,设U1用户在某数据库中是dh_datawriter角色中的成员,则用户U1从该角色中可以
获得的数据操作权限是______。

Ⅰ.查询 Ⅱ.插入 Ⅲ.更改 Ⅳ.删除

A) 仅Ⅰ

B) 仅Ⅰ和Ⅱ

C) 仅Ⅱ、Ⅲ和Ⅳ

D) 全部

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第5题

SQL Server 2008中,如果希望用户u1在DBl数据库中具有查询T1表的权限,正确的授权语句是()。A.GRA

SQL Server 2008中,如果希望用户u1在DBl数据库中具有查询T1表的权限,正确的授权语句是()。

A.GRANT SELECT ON DB1(T1)TO u1

B.GRANT SELECT TO u1 ON DB1(T1)

C.GRANT SELECT TO u1 ON T1

D.GRANT SELECT ON T1 TO u1

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第6题

若不希望用户u1修改某数据库中的所有表,可将u1加入到()角色中。

A.db_datareader

B. db_denydatareader

C. db_datawriter

D. db_denydatawriter

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第7题

在SQL Server 2008中,只具有修改数据库中全部用户表数据权限的系统角色是【9】。

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第8题

在SQL Server 2008中,要授予某数据库中的某个用户具有该数据库中全部用户数据表的插入、删除和修
改权限,比较合理的做法是将该用户添加到系统提供的【6】数据库角色中。

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第9题

在 SQL Server 2000 中,若希望用户user1 具有数据库服务器上的全部权限,则应将 user1 加入到下列哪个角色()

A.db_owner

B.public

C.sysadmin

D.db_datawriter

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