第23题: [单项选择]骨筋膜室综合征的晚期并发症是()。 A. 缺血性骨坏死 B. 肾衰竭 C. 缺血性肌痉挛 D. 不明显 E. 梗死性骨髓炎 参考答案:C 答案解析:早期症状是濒临缺血性肌肉痉挛,发展成为-缺血性肌肉挛缩,最后发展位坏疽。
第24题: [单项选择]This mathematic problem was so difficult that no student and no teacher ______ able to solve it. A. were B. is C. was D. are 参考答案:C 答案解析:..and each...,every...and every...,many a...and many a...和no...and no...这样的结构之后,谓语动词应该用单数形式。