（1）证明：反常积分收敛；
（2）若，，求的值.
What does it take to be a well-trained nurse? The answer used to be two-year associate's or four-year bachelor's degree programs. But as the nursing shortage (1) ______. a growing number of schools and hospitals are establishing "fast-track programs" that enable college graduates with no nursing (2) ______ to become registered nurses with only a year or so of (3) ______ training.
In 1991. there were only 40 fast-track curricula; now there are more than 200. Typical is Columbia University's Entry to Practice program. Students earn their bachelor of science in nursing in a year. Those who stay on for an (4) ______ two years can earn a master's degree that (5) ______ them as nurse practitioners(执业护士) or clinical nurse specialists.
Many students arc recent (6) ______; others are career switchers. Rudy Guardron, 32, a 2004 graduate of Columbia's program, was a premedical student in college and then worked for a pharmaceutical (药物的) research company. At Columbia, he was (7) ______ as a nurse practitioner. "I saw that nurses were in high (8) ______ and it looked like a really good opportunity," he says. "Also. I didn't want to be in school for that long. "
The fast-track trend fills a need, but it's also creating some (9) ______ between newcomers and veterans. "Nurses that are still at the bedside (10) ______ these kids with suspicion," says Linda Pellico, who has taught nursing at Yale University for 18 years. "They wonder, how can they do it quicker?" The answer is they don't.
| A) additional B) applied C) demand D) excessive E) experience F) explores G) graduates H) operations I) promote J) qualifies K) specialized L) tension M) trained N) view O) worsens |
材料一：党的十八届四中全会提出了“全面推进依法治国”、“加快建设社会主义法治国家”的基本方略。要实施这一基本方略，必须从我国基本国情出发，建设和发展符合中国实际、具有中国特色的社会主义法治文化。
材料二：由于历史的原因，我国社会中的“官本位”思想仍然浓厚。长官意志、“拍脑袋”作决策，做事遇到障碍就“蛮干硬上”等现象时有发生，一些领导干部甚至认为，法律只管群众，这在一定程度上阻碍了法治的推进。因此，依法治国的关键是依法治权。
已知集合，，则（ ）
某物理小组对轻弹簧的弹性势能进行探究，实验装置如图（）所示：轻弹簧放置在光滑水平桌面上，弹簧左端固定，右端与一物快接触而不连接，纸带穿过打点计时器并与物块连接．向左推物快使弹簧压缩一段距离，由静止释放物快，通过测量和计算，可求得弹簧被压缩后的弹性势能．
（）实验中涉及到下列操作步骤：
①把纸带向左拉直
②松手释放物快
③接通打点计时器电源
④向左推物快使弹簧压缩，并测量弹簧压缩量
上述步骤正确的操作顺序是______（填入代表步骤的序号）．
（）图（）中和纸带是分别把弹簧压缩到不同位置后所得到的实际打点结果．打点计时器所用交流电的频率为．由纸带所给的数据，可求出在该纸带对应的实验中物块脱离弹簧时的速度为______．比较两纸带可知，______（填“”或“”）纸带对应的实验中弹簧被压缩后的弹性势能大．
（Ⅰ）试推导的前项和公式；
（Ⅱ） 设，证明数列不是等比数列．
下图是哪一人物的生平年表（ ）
