9．He calls on his fellow—Americans to make new sacrifices．to do what his country calls on him to do． He should be prepared to sacrifice everything，even his life if necessary， to defend freedom，to wage constant war against tyranny，poverty，disease and war．The“long twilight struggle”is not a hot war but a constant，persevering fight against tyranny，poverty，disease and the threat of war．
　 10．There are probably some exaggeration in the claim that freedom was in its hour of maximum danger when Kennedy assumed office．However，it is historically justifiable that Kennedy assumed office at a time when freedom was in a most critical hour．The new president had to face many dangers and crises． At home，freedom was endangered by the witch hunting campaign against government workers accused of being communists started by Senator McCarthy． So Kennedy made himself a strong supporter of civil rights．
Ⅲ． 1． The rhetorical devices employed included： figures of speech，parallel and ballanced structures，repetition of important words and phrases，and antitheses．
　 2． Yes，the address is well organized．Kennedy addressed his old friends first with sweetest words and then his foes with sharp words．The order is clear and appropriate．
　 3．In this highly rhetorical address，there are many examples to show that Kennedy is very particular and careful in his choice of and use of words as well as his choice of sentence patterns and structures. For example, in the sentence "To our sister republics south of our border, we offer a special pledge", the word "sister' is particularly chosen to connote equality and mutual good relations in his attempt to allay the traditional fears these countries have of their powerful big brother in the north. And in the sentence "Finally, to those nations who would make themselves our adversary, we offer not a pledge but a request", the phrase "would make them- selves our adversary" is again cleverly chosen to throw the blame for confrontation and world tension on the other party, It suggests that the United States has done nothing to create enemies. It is the other side that is challenging the U. S. , and the latter is forced to take the challenge although it really wants peace.
　 4.Nermedy carefully made his tone and message suited to the different groups he addresses. In his address there is proclaimed loyalty to old allies to sustain unity, assured help and support to minor friends to keep them closely tied to the U. S. , warning advice to newborns to make them over, and veiled threat, warning and! advice to the enemy camp to check ambitions on the part of the enemies.
　 5. Among the passages most likely to be quoted: may be "we shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe to assure the survival and the success of liberty", as this is not only a carefully thought out, well-ballanced sentence easy to remember and elegantly pleasant to read aloud, but also a sentence that best expresses the proud feelings of the Americans as the self-appointed leader of the "free democracies "Kennedy's call for Americans to "ask not what your country can do for you; ask what you can do for your country" is also very often quoted because it represents the enterprising spirit of the Americans of which Kennedy is a best example.
　 6. Kennedy' s argument and persuasion is based mainly on e-motional appeal rather than facts. This type of speech would not be successful on all occasions. It can be successful only when the audience is already excited and does not have much time to think or when the audience is already susceptible to the message of the speaker.
IV. 1. Our ancestors fought a revolutionary war to maintain that all men were created equal and God had given them certain unalienable rights which no state or ruler could take away from them. But today this issue has not yet been decided in many countries around the world.
　 2. This much we promise to do and we promise to do more.
　 3. United and working together we can accomplish a lot of things in a great number of joint undertakings.
　 4. We will not allow any enemy country to subvert this peaceful revolution which brings hope of progress to all our countries.
　 5. The United Nations is our last and best hope of survival in an age where the instruments of war have far surpassed the instruments of peace.
　 6. We pledge to help the United Nations enlarge the area in which its authority and mandate would continue to be in effect or in force.
　 7. before the terrible forces of destruction, which science can now release, overwhelm mankind; before this self-destruction, which may be planned or brought about by an accident, takes place
　 8. Yet both groups of nations are trying to change as quickly as possible this uncertain balance of terrible military power which restrains each group from launching mankind's final war.
　 9. So let us start once again (to discuss and negotiate)and let us remember that being polite is not a sign of weakness. 10. Let both sides try to call forth the wonderful things that science can do for mankind instead of the frightful things it can do.
　 11. Americans of every generation have been called upon to prove their loyalty to their country (by fighting and dying for their country's cause).
　 12.Let history finally judge whether we have done our task welt or not, but our sure reward will be a good con-science for we will have worked sincerely and to the best of our ability.
Ⅴ.See the translation of the text.
Ⅵ.1.prescribe, set down or impose
　 2.mortal: of man (as a being who must eventually die)
　 3.at issue, in dispite; still to be decided
　 4.disciplined, received training that developed self-control and character
　 5.committed, bound by promise, pledged
　 6.undoing : abolishing
　 7. at odds: .in disagreement ; quarreling split asunder : split apart ; disunited
　 8. iron: cruel; merciless
　 9. bounds: chains; fetters
　 10. invective: a violent verbal attack; strong criticism, insuits, curses, etc.
　 11. writ : (archaic) a formal written document ; specifically, a legal instrument in letter form issued under seal in the name of the English monarch from Anglo—Saxon times to declare its grants，wishes and commands(Here it refers to the United Nations Charter．) run：continue in effect or force
　 12．stays：restrains
　 13．tap：draw upon or make use of
　 14．bear：take on；sustain
Ⅶ．1．fatal可用来指一切已经造成死亡或者可能导致死亡的事物 (不能指人)，侧重于其不可避免性。如an illness which might not be serious for a young person．but which will almost certainly prove fatal to the old lady(一种对于年轻人来说也许并不严重，但对于一个老太婆来说却无疑是致命的病症)。deadly在表示“必然致命”这一点上与fatal完全相同，可互换使用。但deadly还有一种为fatal所没有的用法，它可以指一个欲置他人于死地的人。如：The murdered man had many deady enemies．(被害者有很多不共戴天的死敌。)mortal像deadly一样．，可以指能置人于死的人或物。如：Because of an ancient family feud，the two cousins had been mortal enemies from birth．用于指物时， mortal之不同于fatal及deadly之处在于它往往只在已有提及死亡发生的前文后使用。如：He was struck down by a mortal blow upon to head．(他的死是由于头上受了致命一击)。lethal指的是某物质因其构成成分中含有毒素而定可造成死亡，而且其物存在的目的即是为了致人于死地。如：Cyanide is a lethal poison．(氰化物是一种致命的毒药。) 除lethal之外，以上各词均可用来形容某种造成恐慌或极度不安，会带来灾祸但不一定造成生命伤亡的事物。如：a fatal mistake(十分严重的错误)；a deadly insult(难以容忍的侮辱)；in mortal terror(极端的恐怖之中)。
　 2．faithful指出于对个人荣誉、友谊或爱情等的珍惜而体现出的信义和忠诚，如a faithful wife(忠实的妻子)。loyal则指因受道德良心或正义感、责任感的驱使而对某人、某项事业或某个组织表现出坚定不移的耿耿忠心，如a loyal friend(忠实可靠的朋友)。constant一般指爱情或事业上的用心专一，不见异思迁，朝秦暮楚，如a constant lover(用情专一的情人)。staunch(或stanch)指为维护某种原则或信念而表现出毫不动摇的意志和决心，如a staunch defender of the truth(真理的坚决捍卫者)。resolute也表示坚定不动摇的决心，不过多指在小事上或为私人目的而表现出的决心，如：She was resolute in her decision to stay．(她决定留下，很难改变。)