单选题 The ski resort, which includes sharp turns and ______ slopes, is recommended only for advanced skiers.
【正确答案】 D
【答案解析】[解析] 词汇：形容词
1．这是一道词汇题，选项均为形容词。
2．D选项steep(陡峭的)和slope(斜坡)相搭配，因此D为正确选项。