《保护工业产权的巴黎公约》规定强制许可只能在专利权人自提出专利申请之日起满（）年，或者自批准专利权之日满3年（取其中较长者）未实施专利时才能采取此措施。

A.4年

B.2年

C.6年

D.8年

Which of the following would be best to help prepare a preschool-aged child for an injection

A．Having an older child explain that shots do not hurt.

B．Helping the child to imagine she is in a different place.

C．Giving the child a play syringe and a bandage to give a doll injections.

D．Giving the child a pounding board to encourage expressions of anger.