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《老北京的四合院》一文中写道：“北京四合院好在其合，贵在其敞。合便于保存自我的天；敞更容易观赏广阔的空间，视野更大，无坐井观天之弊。这样的居住条件，似乎也影响到居住者的素养气质。”文中提到的“合”与“敞”( )A.体现了征服自然的天人合一理念B.表达了人居与自然的和谐、统一C.是北京四合院建筑固有的本质特征D.决定了北京人稳重大度的素养气质According to a new Ministry of Education survey, students’ safety has become a big problem. Nearly 50 percent of students say they are worried about robbery(抢劫) on the way to and from school. Now in many big cities in China, some schools have taught an unusual lesson: self-protection(自我保护) . Students like this lesson as there are no exams or boring classes. And they can learn how to save lives and know how to stop danger before it really happens. Chen Haoyu, a teacher at Beijing No.25 Middle School and a self-protection expert(专家)，gives young students advice on how to deal with danger. If you are robbed（抢劫）, keep calm. If you can’t cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police. If you are in a traffic accident and a car hurts you, you should take down the car number. If it is a bicycle, try to contact  your parents before you let the rider go. This is because you don’t know how seriously you are hurt. If it is raining hard and there is lightning(闪电), don’t stay in high places and keep away from trees. When there is a fire, get away as fast as you can. Put wet things on your body and try to find an exit(出口). Do not take the lift! If someone is drowning(溺水) but you can’t swim, don’t get into the water. Cry out for help. Remember that danger is never as far away as you think. Take care of yourself at all times! 1.Why do students like the self-protection lesson? A．Because there is advice on exams. B．Because they can learn how to protect themselves. C．Because they like self-protection experts. D．Because they are free to do anything during the lesson. 2.The underlined word “contact” means_______. A．end up           B．think of           C．search for         D．get in touch with 3.If your house is on fire, you must_______. A．put dry things on your body B．run quickly and take the lift C．run away and find an exit as quickly as you can D．take everything you have and then run away 4.If you see a child fall into the river but you can’t swim, you_______. A．should cry out for help                   B．can jump into the river and save him C．can do nothing                         D．should telephone the doctor