利民商店出售一种笔，它的进价是8支5元，售价是6支5元。如果旺旺小商店销售这种笔要获利100元，需要售出这种笔（ ）支。
480
胎盘产生的激素有（）
A.雌激素
B.绒毛膜促性腺激素
C.孕激素
D.生长素
E.胎盘生乳素
—He was a real sportsman, ________ he is not very well known.
—________. Besides, he was young. [ ]
A. though; I am afraid not
B. since; You are sure
C. even if; I agree absolutely
D. because; That's that point
