人身保险产品所能实现的保障水平主要体现在（）。
A．保险金额
B．保费总量
C．保单数量
D．险种数量
参考答案：A
Two lawyers have donated $50,000 to ________ our school's campaign "Help the Needy", which
was started by our former headmaster three years ago. [ ]
A. sponsor
B. launch
C. organize
D. plan
技术上限
