单项选择题The company hopes to sell these machines.
单项选择题A person who has final say in an international company is usually influential one.
单项选择题胆小畏缩,消极防御反应强,这是哪种气质类型的行为表现?()
单项选择题The number of the stampslimited, so a number of peopleto have a look at them.
单项选择题双轨制在()表现得非常典型。