[单选题]下列哪项不是单层柱状上皮的特点
A.主要由棱柱状细胞组成
B.分布于胃肠、肾盏、肾盂等处
C.核常位于细胞近基底部
D. 分布在胃肠、胆囊和子宫等处

Women who apply for jobs in middle or senior management have a higher success rate than men, according to an employment survey. But of course far fewer or them apply for these positions. The study, by recruitment consultants NB Sections, shows that while one in six men who appear on interview shortlists get jobs, the figure rises to one in four for women.
Reasons for higher success rates among women are difficult to isolate. One explanation suggested is that if a woman candidate manages to get on a shortlist, then she has probably already proved herself to be an exceptional candidate. Dr Marx said that when women apply for positions they tend to be better qualitied than their male counter- parts but are more selective and conservative in their job search. Women tend to re- search thoroughly before applying for positions or attending interviews. Men, in the other hand, seem to rely on their ability to sell themselves and to convince employers t