When a speaker expresses his intention of speaking, such as, asking someone to open thewindow, he is performing ______.A

According to the design of the new curriculum _______ cover(s) primary school years which leads to the end of compulsory

下列选项中（ ）是人身保险中最基本的保险。A人寿保险B财产保险C责任保险D再保险