第23题: [单项选择]________ superstitious beliefs about the mandrake plant. A. People have had long B. People have long had C. Have people long had D. Long have had people 参考答案:A 答案解析:原题用的现在完成时态,其结构是“have(has)+过去分词”。have belief about...意为“相信……”,而long是形容词,与superstitious一起修饰名词belief,su