第6题: [多项选择]严重主动脉瓣狭窄引起心肌缺血的病理机制有() A. 左心房代偿性肥厚 B. 舒张期心腔内压力增高,压迫心内膜下冠状动脉 C. 左心室舒张末压升高 D. 左心室壁增厚,心室收缩压升高和射血时间延长,增加心肌氧耗 E. 左心室肥厚,心肌毛细血管密度相对减少 参考答案:B, C, D, E
第20题: [单项选择]A国公民某甲与我国乙公司在B国订立一买卖合同,合同履行地为C国,当事人在合同中选择适用A国法。后因合同履行问题发生纠纷,某甲向我国法院起诉。有关诉讼时效应适用的法律为_________。 A. A国法 B. B国法 C. C国法 D. 我国法 参考答案:A 答案解析:涉外民事法律关系的诉讼时,依冲突规范确定的民事法律关系的准据法确定。合同选择A国法为准据法,诉讼时效应适用A国法。
第21题: [单项选择]A. Hot during the day and cold at night. B. Cold during the day and hot at night. C. Hot day and night. D. Cold day and night. 参考答案:A 答案解析:[听力原文] The Gobi Desert in Asia is one of the largest desert areas in the world. It stretches
第22题: [单项选择]John is the only One of the students who ______ to France. A. has been B. have been C. had been D. has being 参考答案:A 答案解析:[注释] 定语从句中谓语动词的性数应与先行词的性数取得一致。关键是要弄清先行词是the only onc还是the students。