1.The former US policy of running indian reservations schools English,for example ,effectively putlanguages such as Navajo on the danger list.2.However,it wasn’t until the discovery of the reaction principle,which was the key to space travel and so

1.The former US policy of running indian reservations schools English,for example ,effectively putlanguages such as Navajo on the danger list.2.However,it wasn’t until the discovery of the reaction principle,which was the key to space travel and so
1.The former US policy of running indian reservations schools English,for example ,effectively put
languages such as Navajo on the danger list.
2.However,it wasn’t until the discovery of the reaction principle,which was the key to space travel and so represents one of the great milestones in the history of scientific thought,that rocket technology was able to develop.
3.What makes a language endangered is not just the number of speakers,but how old they are.
4.In the Native American Navajo nation,which sprawls across four states in the American south-west,the native language is dying.
5.The problem of how health-care resources should be allocated or apportioned,so that they are distributed in both the most just and most efficient way,is not a new one.
6.Every health system in an economically developed society is faced with the need to decide (either formally or informally) what proportion of the community’s total resources should be spent on health-care; how resources are to be apportioned; what diseases and diabilities and which forms of treatment are to be given priority; which members of the community are to be given special consideration in respect of their health needs; and which forms of treatment are the most cost-effective.
7.People are not in a position to exercise personal liberty and to be self-determining if they are poverty-stricken,or deprived of basic education,or do not live within a context of law and order.

1.The former US policy of running indian reservations schools English,for example ,effectively putlanguages such as Navajo on the danger list.2.However,it wasn’t until the discovery of the reaction principle,which was the key to space travel and so

1. 例如,之前通过美国推行的创办印度预备学校英语政策有效地将各种语言（如纳瓦霍语）列入濒危语言名单.

2. 然而,正是通过对太空旅行起着关键作用,并成为思想史上一个伟大的里程碑代表的发应原理的发现,才使得火箭能够得到发展.

3. 造成语言面临消失的因素不仅在于使用该语言的人数,而且还在于使用该语言的人的年龄.

4. 在横跨东西四个国家的美洲土著纳瓦霍国家,土著语言正逐渐消失.

5. 对于如何更加公平有效分配保健资源的问题,已经不是什么新问题了.

6. 经济发达社会各项医疗体系所面临的问题是需要（正式或非正式）确定从社区资源总量中用于保健的部分情况、资源如何进行分配、优先考虑的疾病、残疾以及治疗形式、出于健康需求角度考虑的社区成员情况以及最有效的治疗形式.

7. 如果人们遭受贫困,或失去基础教育的权利,或生活在毫无法律保障的无秩序环境下,他们则不能享受个人自由,也不能进行自我判断和决定.

仅供参考,望能帮助到你,呵呵!

1、这位前美国政策运行的印第安保留地学校英语，例如，有效地把语言如nnavajo上了濒危动物名单。