下列各组词语中没有错别字的一项( )
A:妄自菲薄 弄巧成绌 步履稳健 博闻强致
B:风华正茂 激浊扬青 慷楷激昂 短小精悍
C:叱炸风云 世人瞩目 追本素源 缒城而出
D:不假思索 迥乎不同 泪下沾襟 屏息以待
—Besides Kate,Linda also took part in the party.
— So many of you were there.
设 Pn(xn,yn)是直线2x﹣y=nn+1(n∈N*)与圆x2+y2=2在第一象限的交点,则极限limn→∞yn-1xn-1=( )