第1题: [单项选择]女性,35岁,慢性腰痛半年余,逐渐加重,与劳累有关。近2个月来伴右臀及右下肢后外侧 痛,无明显低烧、盗汗等症状,但体重有减轻。检查见腰僵直,活动受限,下腰有压痛及叩痛。腰椎X线片显示腰4~5间隙变窄,相邻椎体有破坏。其诊断最可能是 A. 腰4~5椎间盘感染 B. 腰4~5椎间盘突出 C. 腰4~5椎间盘退行性变 D. 腰4~5椎体结核 参考答案:D 答案解析:[解析] 本题考察脊柱结核。年轻人,慢性腰痛,劳累后加重。虽无明显的结核中毒症状,但有体重下降。腰僵直,活动受限,下腰有明显压痛及叩痛,提示有骨病变存在。X线片示间隙变窄,相邻椎体破坏,呈边缘型椎体结
第15题: [单项选择]What has sometimes caused plants to die out A. Interference from foresters. B. Variations in climate. C. The absence of wooded land. D. The introduction of new type of plants. 参考答案:B 答案解析:[解析]推理判断题。第一段末尾说:However,as soon as climatic conditions change in favour of plant life,a fascinating