经国务院批准，我国金融资产管理公司共有（）家。
A.3
B.4
C.5
D.6
参考答案：B
On the surface of the water________, which spoiled the beautiful scenery of the park.
A．some dead leaves did float
B．did float some dead leaves
C．floated some dead leaves
D．did some dead leaves float
致生理盲点扩大的疾病不包括（）
A.黄斑裂孔
B.视盘缺损
C.高度近视
D.有髓神经纤维
E.视盘水肿
