题目

下列四幅图中所描述的物理情景．分析正确的是（    ） A．甲图中正在进行空中加油的飞机，以加油机为参照物，受油机是运动的 B．乙图中向两纸中间吹气，两纸向中间靠拢，是因为空气流速越快压强越小 C．丙图中小孩用力水平推箱子，箱子没有被推动，是因为推力小于箱子受到的摩擦力 D．丁图中用较大的力才能把与水面接触的玻璃板拉离水面，说明分子之间有斥力 Wu Yue, a 14-year-old student at a Junior High School in Hangzhou, usually has lunch with his classmates in their dining hall. But one day, a newcomer, the school headmaster, joined them at the same table. They talked about the food that the dining hall offered and had a nice chat.Wu is not alone. Many students across China have the chance to eat with their headmasters. The government issued a notice on food safety and nutrition (营养) management in schools, asking headmasters from kindergarten to high school to have meals with students. The rule took effect(生效) on April 1st.Many schools now have seats for school managers when they eat with students in the dining hall. After talking with them, the managers have to write reports and make suggestions to dining hall workers. Many students were asked about the food that they liked most. To their surprise, their favorite dishes appeared in the dining hall later. “It's not just about the food. It makes me feel that I have a say in school," explained one student. "My ideas are valued."Some headmasters regard these mealtime conversations as their main chance to communicate with students. And they notice that some students prefer meat to vegetables. “We are thinking about how to improve the dining hall's dishes and provide students with a healthy diet," one headmaster said. As students become more familiar with the school managers, they begin to express their own points of view."It's important to understand students' requirements. Our practice shows the school's sense of responsibility," another headmaster said.1.Who is the newcomer to have lunch with students at the dining hall?A. The new student. B. The school teacher.C. The school headmaster. D. The dining hall worker.2.When did the rule take effect?A. On April 1st. B. On March 1st.C. On January 1st.  D. On May 1st.3.What do the school managers have to do after chatting with students?A. They have to take a walk with students in the schoolyard.B. They have to play games with students on the playground.C. They have to help the dining hall workers do some cleaning.D. They have to write reports and make suggestions to dining hall workers.4.According to paragraph 4, what are the school managers thinking about?A. How to improve their dining hall conditions.B. How to provide students with a healthy diet.C. How to communicate with the parents.D. How to make friends with the students.5.From this passage, we can infer(推断) __________.A. students are not satisfied with the school's managementB. students now prefer fruit and vegetables to meatC. school managers pay more attention to food safety and nutritionD. the relationship between teachers and students becomes better