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题目：
选择题
是不是启发性教学，关键看：＿＿＿＿＿＿＿＿＿＿
- A. 教师能否激活学生思维
- B. 课堂是否热闹
- C. 教师表现是否完美
- D. 学生活动是否充分
答案：
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简述《科学引文索引》（SCI）的索引类型及检索途径。
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Questions 11 to 15 are based on the following passage. Scratchy throats, stuffy noses and body aches all spell misery, but being able to tell if the cause is a cold or flu (流感) may make a difference in how long the misery lasts. The American Lung Association (ALA) has issued new guidelines on combating colds and the flu, and one of the keys is being able to quickly tell the two apart. That’s because the prescription drugs available for the flu need to be taken soon after the illness sets in. As for colds, the sooner a person starts taking over-the-counter remedy, the sooner relief will come. The common cold and the flu are both caused by viruses. More than 200 viruses can cause cold symptoms, while the flu is caused by three viruses—flu A, B and C. There is no cure for either illness, but the flu can be prevented by the flu vaccine (疫苗), which is, for most people, the best way to fight the flu, according to the ALA. But if the flu does strike, quick action can help. Although the flu and common cold have many similarities, there are some obvious signs to look for. Cold symptoms such as stuffy nose, runny nose and scratchy throat typically develop gradually, and adults and teens often do not get a fever. On the other hand, fever is one of the characteristic features of the flu for all ages. And in general, flu symptoms including fever and chills, sore throat and body aches come on suddenly and are more severe than cold symptoms. The ALA notes that it may be particularly difficult to tell when infants and preschool age children have the flu. It advises parents to call the doctor if their small children have flu-like symptoms. Both cold and flu symptoms can be eased with over-the-counter medications as well. However, children and teens with a cold or flu should not take aspirin for pain relief because of the risk of Reye syndrome (综合症)，a rare but serious condition of the liver and central nervous system. There is, of course, no vaccine for the common cold. But frequent hand washing and avoiding close contact with people who have colds can reduce the likelihood of catching one. According to the author, knowing the cause of the misery will help（） We learn from the passage that （） According to the passage, to combat the flu effectively, （） Which of the following symptoms will distinguish the flu from a cold? （） If children have flu-like symptoms, their parents （）
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列车车列驶过了指示其停车的信号称为（）。
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当泵缸体内压力减小的时候，（）。
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细胞内负责甲基化修饰作用的两类酶是______和______。
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患者，男，46岁，胃溃疡病史20年，近3个月疼痛加重，伴头晕、乏力，面色苍白。查Hb70g／L，红细胞形态具备小细胞低色素特点，SF8ug／L，SI30ug／L，TIBC600ug／L，在下一步诊断措施中，哪一项最重要（）
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擅自发车系指车站发车人员未确认（），运转车长未得到发车人员的（），车站发车人员未确认运转车长（）直接发车。
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绘图题：画出频移键控（FSK）调制原理图。
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对于凭证式国债质押贷款，贷款期限不足6个月的，按6个月的法定贷款利率确定。（）
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对怀疑为结肠癌的患者应检测（）