题目

When I ________, I am going to be a teacher. A . am elder B . grow up C . am going to grow up D . grew up 答案：B下列选项中，属于自然资源的是A．农民生产的稻谷B．工人冶炼的钢铁 C．水电厂生产的电D．非洲草原的野生动物