We have prepared _______ for so many apples. A. enough big baskets B. big enough basket C. an enough big basket D. baskets enough big 答案:A 解析: enough这这里用形容词,修饰名词 baskets,但形容词big也修饰名词baskets,所以选选项A。一光源发出的一束光从地面上竖直向上投射到和它垂直的平面镜上,平面镜与地面距离为3米,如果把平面镜绕水平轴转过30°角,则地面上所成光点离光源多远?