题目

（04年全国卷Ⅱ）现有1200个氢原子被激发到量子数为4的能级上，若这些受激氢原子最后都回到基态，则在此过程中发出的光子总数是多少？假定处在量子数为n的激发态的氢原子跃迁到各较低能级的原子数都是处在该激发态能级上的原子总数的。  A．2200      B．2000      C．1200     D．24 00 答案：答案：A3、       Although she was risking her life and being criticized by many, she spent nine years needed for her reports, she often tested the dangerous equipment on herself.        Chen Xiaolan, a 55—year—old former doctor, is the model of a person filled with bravery and determination. “Once in the doctor’s uniform ,she always sticks to her belief to be responsible for the patients .She has made the career even more holy（神圣的）,” said China Central Television, which honored her ,along with ten other, “People Who Moved China in 2007” on February 17, 2008.        Chen’s lonely fight against cheat began in 1997 when her patients complained about a high—tech injector（注射器）. The patients said the injection was unusually painful but doctors ignored their complaints .Soon Chen found that doctors were receiving 7 yuan from the 40 yuan fee each time the new injector was used.        To test the injector, Chen risked her own life by having the same injection. After receiving the injection she got sick. After researching ,she found her problems came from the injection. With proof（证据）in hand ,she reported to the government and a nationwide ban (law)was introduced in 2005. During the past nine years, Chen reported on eight different types of fake medical equipment and became a hero.        However ,she paid much for her honesty and bravery. Chen twice lost her job as a doctor and was almost sent to a mental（精神的）hospital by her boss. She used up her money and lived on support from her relatives abroad.        “I never regret,” said Chen. “Doctors shouldn’t lie. And I just stick to what I believe is right.” 1．What does “fake” (paragraph 1) mean?        A．Not real               B．Expensive            C．Popular               D．Mental 2．Why was Chen Xiaolan once almost sent to a mental hospital by her boss?        A．She was really mentally ill and became mad.        B．She received some money from some medical equipment’s being used.        C．She introduced a ban to stop fake medical equipment.        D．She protected patients from fake medical equipment, which affected some people’s personal interest. 3．According to the passage, we know Chen Xiaolan is        .        A．ill                        B．lonely                  C．brave                  D．moved 4．Which of the following statements is NOT talked about but can be inferred from this essay?        A．”People Who Moved China in 2007” are those making contributions to China.        B．Chen Xiaolan used to be crazy when she was in the doctor’s uniform.        C．Chen Xiaolan thinks every patient should be responsible for his/her health.        D．Chen Xiaolan must make lots of money from selling medical equipment. 5．The following is the lists of her life experiences. Which group happens in order of time?        ①She was honored “People Who Moved China in 2007”.        ②A national—wide ban was introduced because of her efforts.        ③She used to be a responsible doctor.        ④She tested a high—tech injector on herself to get proof.        ⑤She began to fight against fake medical equipment.        A．①②③④⑤        B．③⑤④②①         C．①③⑤④②        D．⑤④①③②