由多数充满血液的腔隙所构成的血瘤属于( )
A．曲张静脉团B．毛细血管瘤C．蔓状血管瘤D．冠状动脉瘤E．海绵状血管瘤
参考答案：E
I have had such a case_________a boy whispered to his classmate now and then while I was having lessons.
A．as
B．that
C．which
D．where
下列哪项不能作为国家助学贷款的贷款见证人。（）
A.授课教师
B.系主任
C.学生在外租房的房东
D.学生的辅导老师
