Karen MacInnes had spent nine months in the hospital. As she grew weaker, the 16-year-old girl asked her parents, Am I going to me.
Her mother told Karen the truth. After learning the bad news, all Karen wanted was to go home.
Her parents decided to satisfy her wish--no matter that medical fund (基金), which had helped pay for Karen′ s hospitalization, would not cover any of the full time medical care she would need at home. When she was carried through her front door, Karen smiled for the first time in months.
A friend of the MacInnes family, Sheila Petersen, knew of this and offered to help. She volun-teered( 自愿) not only to find nurses, but also to raise money for Karen′ s care. Money was received from so many people that Sheila created a fund," Friends of Karen".
After leaving the hospital, Karen lived for 11 months. "And those months were happy ones for her," says her mother, "thanks to Sheila. "
Even after Karen died, people kept sending money. Sheila put it into the fund, tried to find someone else who needed help. By last month, Friends of Karen was helping 70 families.
"I still have a relationship with each family," says Sheila. "We have four children who are near death now, and I want to be there for them. "Sheila admits (承认) the work is sometimes difficult, but says," the smile on a child′s face makes it all worthwhile(值得的). "
Her parents agreed to take Karen home because .
由文章第二段第二、三句话可知，Karen的父母同意把她带回家是因为他们希望能满足她的愿望。
把10gMgCl2和MgSO4的混合物溶于适量水中，滴加2mol／L的BaCl2溶液至沉淀完全，共消耗BaCl2溶液25mL。求混合物中MgCl2和MgSO4的质量各是多少克
固定在匀强磁场中的正方形导线框abcd，各边长为1．其中ab是一段电阻为R的均匀电阻丝，其余3边均为电阻可忽略的铜线。磁场的磁感应强度为B，方向垂直纸面向里。现有一与ab段的材料、粗细、长度都相同的电阻丝PQ架在导体框上，如图所示。PQ以恒定速度方向如何
一小物块以速度v0=10m／s沿光滑地面滑行，然后沿光滑曲面上升到顶部水平的高台上，并由高台上飞出，如图所示。问当高台的高度h多大时，小物块飞行的水平距离最大这个距离是多少(g=10m／s2)
某晶体盐的水溶液呈浅绿色，在此溶液中通入氯气，溶液变为棕黄色，把所得棕黄色溶液分成两份：一份加入KSCN溶液，溶液变深红色；另一份加入BaCl2溶液，产生不溶于稀HNO3的白色沉淀，则该晶体盐的化学式是_______。
欲除去乙烷中的乙烯，可将混合气体通过盛有_______的洗气瓶；欲除去乙炔中的硫化氢，可将混合气体通过盛有_______的洗气瓶。
浓硝酸常盛装在棕色瓶中，且贮放在冷暗处，原因是_______，
碳酸氢钠溶液和烧碱溶液反应的离子方程式为_______。
常温下，氨水中存在的离子有_______。
在酸或碱存在的条件下，甲酸甲酯跟水发生水解反应的化学方程式为_______。
有下列几种气体：H2、O2、HCl、NO、NH3、CH4，其中通常情况下能用来和水做“喷泉”实验的是_______。
