题目

热敏电阻是温度传感器的核心元件，某热敏电阻说明书给出的阻值R随温度t变化的曲线如图甲所示，现在有一课外活动小组利用所学知识来测量该金属热敏电阻随温度变化（低于100℃）的阻值，现提供实验器材，如下：A．直流电源，电动势E=3V，内阻不计。B．电压表，量程3V，内阻约5KΩC．电流表，量程0.3A，内阻约10ΩD．滑动变阻器R1 ， 最大阻值5ΩE．滑动变阻器R2 ， 最大阻值2KΩF．被测热敏电阻Rt；G．开关、导线若干 （1） 本实验采用如图乙的FOR many young people, having to attend school with a parent would be their worst nightmare. However, Senior 1 student Li Qinmei is happy taking her father with her as long as she can go to classes. He is disabled and unable to take care of himself.The 16-year-old country girl in Zhucheng, Shandong Province has experienced one disaster after another in her short life. Li lost her mother at three. Four years later, her father became paralyzed after a tractor accident. At 12, her misfortune returned with the death of her grandma. Since then she has been forced to shoulder all the responsibility for her broken family. Li learnt to cook and managed to live a life with an allowance of only 24 yuan per month. The most difficult thing she had to deal with was helping her father bathe, dress and use the toilet as he could hardly move."I felt embarrassed, and so did my dad. It was really hard at the beginning," she recalled.During most of her junior school years, Li went to classes only once a month as her father was seriously ill at the time."I taught myself at home and asked teachers for help on my school days," she explained.Li's hard work paid off this fall. She was admitted by Zhucheng No 1 High School, a local key school, based on her good performance in the entrance exams.The school offered Li and her father a room on campus to live in so she could look after him during breaks. Once in a while, Li felt sad when she saw her classmates going shopping or hanging out with friends. "I envy them sometimes because they have both mum and dad to look after them. However, I soon feel relieved as I still have my dad with me," she said.Li admitted that the difficulties in life had taught her to be strong."I believe I will go on and continue my studies at a good university," she said, in a confident tone.Her teacher Mr. Wang has the same belief. Li made great progress in the recent monthly exams. "She works hard and is always eager to excel (好强的). It's not easy for her never to be late for school, but she has managed to make it work," Wang said.【小题1】Li Qinmei has to shoulder the family because ________.A．her father was badly injured in a car accidentB．her mother passed away when she was 3C．her grandma died when she was 12D．misfortune in her life forced her to do so【小题2】From the passage we can infer that _________.A．Li Qinmei doesn’t like others talking about her fatherB．many young students hate going to school with their parentsC．Li Qinmei has made great progress in her studyD．Li Qinmei has lost three relatives and has to take care of her father【小题3】What’s the meaning of the underlined phrase “hanging out” in the passage?_________.A．playing outsideB．working hardC．exchanging ideasD．talking happily【小题4】According to the passage, which statement is Not True? __________.A．Li Qinmei was admitted to a local key school because of his good scores in the examsB．Li Qinmei is not very embarrassed when she helps her father batheC．Li Qinmei often goes to attend her father after classD．Li Qinmei is able to go to class on time though she has to attend her father【小题5】What’s the best title of the story?________.A．Difficulties make strongB．A touching storyC．A strong-minded girl-Li QinmeiD．Li Qinmei’s successful study life