【正文】 pologists argued that the migration occurred 12,000 years ago. However, there are a number of difficulties with this theory in particular, the presence of people in the Americas earlier than one might think. There is growing evidence of human presence in Brazil and Chile 11,500 years ago or earlier. There is also evidence of humans living in 1. A 2. B 3. C 4. D 5. D 7. B 8. A 9. D 10. C Cloze the Americas some 50,000 years ago. Therefore, other possibilities have been suggested. They may have crossed the land bridge several thousand years earlier or they may have sailed along the western coast. However, some contest this theory. They think that humans lacked skills for sailing during that era. Some consider the geic and cultural evidence for an Asian origin overwhelming. It should be noted, however, that some other people ate very upset at this idea. Many presentday Native Americans reject the above theories. They say those who put forward such theories have political motivation. They have their own traditional stories that offer accounts of where they came from. Their own stories claim that their origins are different from what scientists say. Those accounts, though, have mostly been ignored by scholars. Therefore, the origin of Americans still remains a mystery to be explored. 11. B 15. D 。 Translation 5. Wherever they are now, black people are descended from Africans, but over the centuries, their geic heritage has bee diversified and plicated because of various reasons. 6. In effect, they agreed to the view that the very change in law brings about a change in the nature of society and human relationships within it. 5. 不管現(xiàn)在身在何地，黑人都是非洲人的后裔，但是數(shù)百年來，由于種種原因，他們的遺傳基因已經(jīng)變得多樣化且非常復(fù)雜。 From such an analysis we are in a better position to understand what has happened and what to do about it. in a better position to do Translation XI. Translate the following sentences into Chinese. 1. As a responsible manufacturer, we are more than concerned about the environment。 Their research findings were nothing less than a miracle. As a result of their findings, new light has been shed on the history of human genes. nothing less than new shed light on Translation 3. 事實(shí)上，只有勤奮 加 方法得當(dāng)才能使你在學(xué)習(xí)上 比他人有優(yōu)勢 。 he wanted to make sure that the holiday would be nothing less than perfect for her. Translation XI. Translate the following sentences into English. 1. 這些科學(xué)家在創(chuàng)建 基因圖譜 的過程中體會到 :合作 不僅僅是一種有吸引力的選擇，它還是一種責(zé)任。 he had learnt to find stories that would have genuine popular appeal. 5. Compared our achievements today with what we started out to be, it is not simply a miracle brought about by years of exceptionally hard work. 3. This story is more than interesting。 it is educational as well. 4. Hepworth is not only a filmmaker。 he wanted to make sure that the holiday would be just perfect for her. 3. Their dream was nothing less than a revolutionary project to bring puters and ordinary people together. 4. The experience of sightseeing in the wonderful island is nothing less than exciting and I am moved to tears. 5. He was very concerned that she should not be tired or bored。由于他們的發(fā)現(xiàn)，人們對人類基因的歷史有了 新的了解 。 The risk of infection is confined to those who have close contact with the patients. infection be confined to Translation 6. 從這一分析我們可以 更好地 知道發(fā)生了什么以及要做什么。 Translation 3. Other than academic success, what has been your greatest achievement to date? 4. Observations and experiments are carried out in order to test or shed light on some theory, and only those observations considered relevant to that task should be recorded. 3. 除了學(xué)業(yè)上的成績，你迄今為止最大的成就是什么？ 4. 觀察和實(shí)驗(yàn)的目的是為了驗(yàn)證或闡明某些理論，只有那些被視為與任務(wù)相關(guān)的觀察才應(yīng)該被記錄下來