第33题: [多项选择]下列关于纤维混凝土作用的说法,正确的有( )。 A. 很好地控制混凝土结构性裂变 B. 增强混凝土的抗磨损能力 C. 增强混凝土的抗破损能力 D. 增强混凝土的抗冲击能力 E. 减少混凝土渗透性 参考答案:B,C,D,E
第34题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. Her safety. B. Her health. C. Her luggage. D. Her mood. 参考答案:B 答案解析:[听力原文]
M: I am always afraid of taking a ride in a plane. When the plane is high in the air, I ofte