根据材料回答17~20题Themainpurposeofannouncingtheaboveplacesistoadvertise_____.[A]BeijingWo
根据材料回答17~20题The main purpose of announcing the above placesis to advertise _____. [A]BeijingWorld Trade Center[B]EastWing Building[C]BeijingWorld Hotel[D]WestWing Building