题目

As I grew up in a small town at the foot of a mountain, the visit to the village _______ scenes of my childhood. A. called up                   B. called for      C. called on      D. called in 答案：a20．下列有关土壤的叙述，正确的是（　　）A．岩石主要影响土壤的土层厚度、水热条件B．气候主要影响土壤的水热状况、发育程度C．生物主要影响土壤的发育程度、矿物养分D．地形主要影响土壤的质地特征、肥力特性