题目

--- How can our business earn a lot of money? --- Our business will _______ profit ______ we have enough equipment of high quality． A．bring in; as long as                                B．bring out; if only C．bring up; unless                                  D．bring about; in order that 答案：A初一有学生m人，女生占51%，则男生人数为 [　　] A．m－51%B．1－51%m C．49%D．49%m