【单选题】
如下所示的这段CSS样式代码，定义的样式效果是（ ）。a:link {color: #ff0000;} a:visited {color: #00ff00;}a:hover {color: #0000ff;}a:active {color: #000000;}其中#ff0000为红色，#00000为黑色，#0000ff为蓝色， #00ff00为绿色
①
A. 默认链接色是绿色，访问过链接是蓝色，鼠标上滚链接是黑色，活动链接是红色
②
B. 默认链接色是蓝色，访问过链接是黑色，鼠标上滚链接是红色，活动链接是绿色
③
C. 默认链接色是红色，访问过链接是绿色，鼠标上滚链接是蓝色，活动链接是黑色
④
D. 默认链接色是黑色，访问过链接是红色，鼠标上滚链接是绿色，活动链接是蓝色
【单选题】
We are taught that a business letter should be written in a formal style rather than________.
①
in a personal style
②
with a personal style
③
personal style
④
a personal style
【判断题】
求<img src=http://oss.ouchn.cn/ddzx/N601/jiaoyu/jjsx/50459/unit/chapter_five/images/07/image015.png align=absmiddle style=box-sizing: inherit; border-style: none; vertical-align: middle; color: rgb(58, 58, 58); font-family: Microsoft YaHei font-size: medium; white-space: normal; background-color: rgb(255, 255, 255);/>的方法是分部积分法。
①
正确
②
错误
【单选题】
Which of the following is NOT right about Mark Twains style of language?
①
His sentence structures are long, ungrammatical and difficult to read.
②
His words are colloquial, concrete and direct in effect.
③
His humor is remarkable and characterized by puns, straight-faced exaggeration, repetition and anti-climax.
④
His style of language had exerted rather deep influence on the contemporary writers.