第1题: [单项选择]精原细胞瘤的声像图表现特点是()。 A. 睾丸增大、肿块呈椭圆形、轮廓不整、呈中强回声 B. 睾丸增大、肿块呈椭圆形、轮廓不整、呈不均匀中强回声 C. 睾丸增大、肿块呈圆形、轮廓整齐、呈无回声、后壁回声增强 D. 睾丸增大、肿块呈椭圆形、轮廓不整齐、呈强弱不等的混合性回声,并有囊性变 E. 睾丸增大、肿块呈椭圆形、轮廓整齐、呈中低回声 参考答案:D
第20题: [单项选择]A. By paying for meals one at a time. B. By borrowing a student’s meal card. C. By ordering their meals in advance. D. By buying a weekend meal card. 参考答案:A 答案解析:[听力原文] Q: How can weekend guests eat in the cafeteria