眼球的成像原理与照相机的成像原理非常相似。眼球结构中相当于照相机镜头的[ ]
A．角膜
B．瞳孔
C．视网膜
D．晶状体
答案：D
After getting lost in a storm, a member of the navy team ________ four days later.[ ]
A. rescued
B. was rescued
C. has rescued
D. had been rescued
托收的一个重要特点是银行的地位严格限于作为
A．收款人
B．付款人
C．担保人
D．代理人
