在jQuery中,用()语法实现添加多个类。 A: $(selector).addClass("c1,c2,c3") B: $(selector).addClass([c1,c2,c3]) C: $(selector).addClass({c1,c2,c3}) D: $(selector).addClass("c1 c2 c3")

The shop _________ in May. A: opens B: opened C: is to be opened D: has opened

We have received your L/C ____ Bank of China. A: opened for B: opened in C: opened through D: opened at

Several branches of the bank have recently ________ across China. A: opened with B: opened on C: opened off D: opened up

The noise of the desks _____ could be heard in the next classroom. A: being opened and closed B: opened and closed C: having been opened and closed D: to be opened and closed

1. The door is open. Who _____________ it? (has opened / had opened)

通过jQuery中提供的addClass()方法进行追加样式，addClass()是向该原先的样式中添加了一种新的样式

在jQuery中，能够为元素添加CSS样式的一组方法是___ A: ready() 、next() B: css()、 next() C: css()、addClass() D: ready()、addClass()

The noise of desks___could be heard out in the street. A: opened and closed B: to be opened and closed C: being opened and closed D: having been open and closed

At the beginning of the class,the noise of desks ________could be heard outside the classroom. A: opened and closed B: to be opened and closed C: being opened and closed D: to open and close