在直角坐标系中，以原点为圆心，半径为5的圆内有一点P（0，-3），那么经过点P的所有弦中，最短的弦的长为[ ]
A.4
B.5
C.8
D.10
答案：C
Questions 1-4
What is typical of the American campus system？（）
A．Students live in halls residence around the university buildings.
B．Students are encouraged to conduct their independent research project.
C．Students first live in halls of residence and then are allowed to move out.
D．Students can share the common rooms with faculty members.
分行每年应至少组织（）次全辖范围的会计业务重点环节的全面检查。
A.一
B.二
C.三
D.四
A
