单项选择题
A.each()B.size()C.lengthD.onclick()
A.alert($(".top1").text());B.alert($(’[name=header]’).text());C.alert($([name=’header1’]).text());D.alert($(’#header1’).text());
A.$("#p-list li:nth-child(0)").hide();B.$("#p-list li:only-child").hide();C.$("#p-list li:last-child").hide();D.$("#p-list li:first-child").hide();