Unit 1Text B Family-unfriendly Policies1.…, even after a significant reform of the welfare system, the single welfaremother has become the public symbol of much of what is wrong with America’s social service programs. (para 8)即使福利制度发生重大变革后，领取福利金的单身母亲成了美国福利政策的主要问题。
Paraphrase:a. Though a major reform of the welfare system has been carried out, the policies of aiding the single mother is still a demonstration(a good example) to show that the American social service programs have fundamental problems.b. Even after a major reform in welfare system, the single mother still enjoy too much benefits, which is always regarded as the main problem in America’s social service programs.2.Federal aid should give incentives for couples to form and sustain healthymarriages, not encouragement for single parenthood and nonmarital birth.(para 8)联邦援助应该鼓励夫妻双方建立并维系健康的婚姻，而不是鼓励单亲家庭和未婚生育。
Paraphrase:a. The government should encourage couples to set up and keep healthy marriages, not encourage households with one parent and give birth to children out of wedlock.b. Federal government should encourage couples to marry and keep healthy marriage and discourage giving birth to kids by single parents and unmarried parents.3.Public policy should not contribute to an a la carte menu of sex, love, andchildbearing. It should emphasize the benefits for all from the package deal of marriage. (para 9)国家政策不应该只制定有关性、爱和生育方面的政策，而应该想所有人强调从一揽子婚姻中所获得的好处。
Paraphrase:a. The policy for the public should not promote individually(separately) sex, love and childbearing, but should focus on the interests of the whole of marriage for all the people.b. Public policy should not be helpful to the separation between sex, love and childbearing. It should stress the benefits of all the married couples.Unit 2Text B Deep water Drilling1.Deep waters that were once off limits to oil explores are suddenly accessible,partly because of advances in floating rigs. ( para 19)以前开发不了的深海海域现在也能够涉足，部分原因是由于浮式钻机技术的进步。
Paraphrase:a. Deep water exploring oil had once been impossible before, but now it becomes practicable in part because the floating rigs have developed much.b. Oil explorers are now suddenly able to operate in deep waters where they couldn’t get to, in part because there are developments in floating rigs.2.Everywhere, the quest is for speed and lightness. The last hurrah for the oldguard may be the 4.2 billion Hibernian oil projects on Canada’s Grand Banks. (para 22)无论在哪，更快、更轻便都是永恒追求的目标。
我们似乎还听得见为庆祝在加拿大海岸发现42亿储量的爱尔兰石油工程发出的欢呼声。
Paraphrase:a. Anywhere in deep water drill field, high Speed and light weight is pursued forever. The last acclamation for the completion of the old typed fixed production platform may be the 4.2 billion Hibernian oil projects on Canada’s Grand Banks.3.Now, oil-rich countries that once spurned Western oil companies asimperialists realize that they’re missing out on a good thing. (para26)如今，那些一度排挤西方石油公司的富油国意识到他们错失了发展良机。
Paraphrase:a. Oil rich countries, which regarded the western oil companies as imperialists and rejected them, now get to know (realize) that they are failing to make use of their investment.4.Add all that up and you have the recipe for a possible explosion in oilproduction. (para 27)想想以上这些，你就会明白，石油开采仍有很大的发展空间。
Paraphrase:a. If we gather all the factors above, we have reasons to believe it is possible to have a explosion in oil production.b. Taking all these factors of technology and foreign capital into consideration, you may get the idea why there is a large oil production(why a large oil production is possible).Unit 3Text A The New Frontier of Biomedicine1. A liver cell has a different job from a blood cell and proteins to match. (para 3)肝细胞与血液细胞分工不同，而且与之匹配的蛋白质也不同。
Paraphrase:A liver cell plays a different role compared with a blood cell and the proteins inside a liver cell are different from those inside a blood cell.2. But as the plasma proteome project shows, there will be a pay-off even at thestage of cataloguing proteins. (para 8)然而，正如血浆蛋白质组项目所展现的那样，即使是在蛋白质分类的初始阶段，我们也将受益匪浅。
Paraphrase:But as the plasma proteome projects indicates, people will benefit even during the period of making a list of proteins.3.And if the unexpected technological leaps made in fiercely competitive race for the human genome are anything to go by, they will arrive faster than we might think.(para 8)而且根据竞争极其激烈的人类基因组研究所取得的出人意料的技术飞跃，蛋白质组的分类图谱等研究会比我们预想的更快一些完成。
Paraphrase:a. Because there is much competition in the human genome research and technology develops so fast, mapping the millions of proteins in our bodies will be completed more quickly than we can imagine.b. If we judge by the unexpected technological advances achieved in human genome which involves fierce competition, the achievements in the field of proteomics will be accomplished more quickly than we might think.Text B Clones Makes a Man?1. A controversial area of science that has hardly been out of the spotlight since the birth of its leading lady, Dolly, the sheep, is cloning. (para 1)自从首只克隆羊多利诞生以来，克隆这项备受争议的科学技术就成为人们关注的焦点。