未知题型
未知题型 Scientists now understand why people's mental faculties decline at different rates.A.YB.NC.NG
未知题型 非语言的行为分为:体态行为、时空行为、外表行为和()。
未知题型 By saying '...those raw materials exist already in abundance in every nation', the author is referring to ______.A.hosts and staff to welcome visitorsB.people, the environment and cultureC.the capital used to build the tourism industryD.the environmental resources to build up tourism