单项选择题
1、根据以下资料，回答题：
        Drink from plastic bottles can raise the body's levels of a controversial "gender-bending" chemical by more than two thirds, according to tests．
        Experts have been concerned about the possible health effects of bisphenolA (BPA．--an everyday chemical used in many plastic food and drink containers and tins as well as clear baby bottles--which is officially classified as toxic in some countries．A study found that participants who drank for a week from polycarbonate (聚碳酸酯) bottles showed a 69 percent increase in their urine (尿液) of BPA．
        Researchers did not say how much liquid was drunk per day．Researchers from Harvard School ofPublic Health studied 77 students, who had first undergone a seven-day "washout" phase in which theydrank all cold beverages (饮料) from stainless steel bottles in order to minimise BPA exposure．
        They were then given two polycarbonate bottles and asked to drink all cold beverages from themduring the next week．Previous studies have suggested that high levels of BPA consumption are linked tobirth defects, growth problems and an increased risk of heart disease．In particular there are fears thatheating the bottles, as parents would do when warming their baby's milk, causes the chemical to leak inpotentially dangerous quantities into the liquid contained within．
        "If you heat those bottles, as is the case with baby bottles, we would expect the levels to beconsiderably higher．This would be of concern since infants may be particularly susceptible to BPA'shormone gland-disrupting (扰乱腺体极速分泌) potential．" said the senior author of the latest study, Karin B．Michels．
        Most adults carry BPA in their bodies but expert opinion on the risks is divided．The European Food Safety Authority believes that people naturally convert the chemical into less harmful substances in the body．
        Previous studies had found that BPA could leach (渗出 ) from polycarbonate bottles into theircontents, but this study is the first to show the size of the corresponding increase in urinary BPAconcentrations in humans．
        Harvard researcher Jenny Carwile said, "While previous studies have demonstrated that BPA is linkedto adverse health effects, this study fills in a missing piece of the puzzle--whether or not polycarbonateplastic bottles are an important contributor to the amount of BPA in the body．"

What do we know about bisphenol A (BPA．from the beginning of the passage?
A．It is certain substance taken in by human beings every day．
B．It is a component contained in a number of plastic products．
C．It is an element that plays a decisive role in people's gender．
D．It is a kind of chemical that is universally regarded poisonous．


填空题
2、 __________


3、 __________



简答题
4、中国致力于建设国家创新体系，通过营造良好的环境，推进知识创新、技术创新和体制创新。中国政府支持科学家为了国家需求和科学发展开展基础研究，鼓励他们进行“好奇心驱动的研究”。在未来50年甚至更长的时期里，中国的发展将在很大程度上依赖于今天基础研究和高技术研究的创新成就，依赖于这些研究中所必然孕育的人才。



5、大熊猫是一种温顺的动物，长着独特的黑白皮毛。因其数量极少，大熊猫已被列为濒危物种。大熊猫对于世界自然基金会有着特殊意义。自1961年该基金会成立以来，大熊猫就一直是它的徽标。大熊猫是熊科中稀有的成员，主要生活在中国西南部的森林里。目前，世界上大约有1000只大熊猫。这些以竹为食的动物正面临许多威胁。因此，确保大熊猫的生存比以往更重要。

6、

I’ve won two dollars in this lottery! Who says we don’t live in an opportunity society?

7、诗歌是早的文学体裁，它以抒情的方式，高度集中地反映社会生活。在文字出现以前，诗歌就已经存在了，因为诗歌源于劳动。诗歌是有节奏、有韵律并富有感情色彩的一种语言艺术形式，也是世界上古老、基本的文学形式。《诗经》(Book of C | ass i c Poetry)是我国早的一部诗歌总集，它收集了自西周初年至春秋时期大约五百多年的三百零五篇诗歌，在中国文学发展史上占有突出的地位。


8、麻将是中国人主要的休闲娱乐之一。它起源于中国，其历史可追溯到三四千年以前。麻将原是皇家和王公贵族们的游戏，在长期的历史演变过程中，逐步从宫廷流传到民间，到清朝中期基本定型。麻将自1920年传入美国后。受欢迎的程度并不比在中国逊色。在南加州就常常举办麻将比赛。有人说，麻将之所以在国外那么受欢迎，正是源于外国人对中国古老文化的认知和认同(recogn i t i on and acceptance)。


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