第31题: [单项选择]诊断强直性脊柱炎最可靠的依据是 A. HLA-B27阳性 B. 驼背畸形 C. 脊柱"竹节样"改变 D. 双侧骶髂关节炎 E. 抗核抗体阳性 参考答案:C 答案解析:[解题思路] 脊柱"竹节样"改变是强直性脊柱炎的特征性X线表现。HLA-B27阳性、抗核抗体阳性亦可见于其他自身免疫性疾病。
第34题: [单项选择]Passage Two Questions 29 to 32 are based on the passage you have just heard. A. They are less intelligent. B. They are less moral. C. They are more numerous. D. They often speak a non-English language at home. 参考答案:D 答案解析:[听力原文] Why do minorities create an educational problem in America