创建自定义CSS样式时，样式名称的前面必须加一个（）
A、$
B、#
C、
D、font
参考答案：C
(2013·高考福建卷)The girl has a great interest in sport and ________ badminton classes twice a week over the last three years.
A．took
B．is taking
C．takes
D．has been taking
解方程:5–2x ＝ x＋8
