第16题: [单项选择]甲状腺危象的原因为() A. 胰岛素绝对不足 B. 大量甲状腺素突然入血 C. 呼气带烂苹果味 D. 甲状腺肿大,震颤,有杂音 E. 饥饿感,心慌手颤 参考答案:B 答案解析:甲状腺危象系甲状腺功能亢进症病情恶化时的严重症候群,可危及生命,常因各种诱因所致的大量甲状腺素突然释放入血导致。1型糖尿病发病系因胰岛B细胞破坏、胰岛素分泌绝对不足所致。糖尿病代谢紊乱加重时,脂肪动员
第28题: [单项选择]{{I}} Questions 17-20 are based on the following passage. You now have 20 seconds to read the questions 17-20{{/I}}What is the main topic of the lecture A. Bicycles and cars. B. Building codes. C. New housing construction. D. Energy conservation. 参考答案:D 答案解析: [解析] 主旨归纳题,从谈话开头的几句“For the past few weeks we have been discussing national
energy conservatio