单项选择题A．Ambiguous.B．Negative.C．Apologetic.D．Supportiv
填空题group participants audience
单项选择题A．10.B．20.C．At least 40.D．At least 60.
填空题circulating
单项选择题A．In the southern provinces.B．In the northern cities.C．In the west.D．In the east.
