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阅读以下短文，回答下列题： 由我国科学家精确绘制的水稻第四号染色体精确测序图发表在代表国际权威的英国《自然》杂志上。科技部：中国科学院在上海宣布，我国科学家独立完成了“国际水稻基因组计划”第四号染色体精确测序任务，对这一国际计划的贡献率达10%，这是我国迄今为止完成的最大基因单条染色体的精确测序。 刊于《自然》杂志的论文《水稻基因组第四号染色体序列及分析》宣布，中国科学家采用克隆步移法完成了对水稻粳稻基因组第四号染色体全长序列的精确测定。拼接后总长为3500万碱基对，精确度为99.99%，覆盖了染色体全长序列98%的区域，达到国际公认的基因组测序图的标准。 科学家们在完成序列精确测定的同时，还做了大量的研究工作：对水稻第四号染色体所含基因进行预测分析，鉴定出4658个基因，为进一步鉴定这些基因的功能奠定了基础；完整地测定了水稻四号染色体的着丝粒序列，这是迄今首次完成的高等生物染色体着丝粒序列，为研究着丝粒的功能、染色体的稳定性和染色体的复制提供了基础，也为开发可转化的“人工水稻或植物染色体”提供了基础。以蓝天、白云、金色水稻为封面的本期《自然》杂志，同时也刊登了日本科学家对水稻第一号染色体的精确测序。 测序专家工作组组长、中科院国家基因研究中心的韩斌博士告诉记者，第四号染色体的测序工作于2001年4月启动，首先完成精细物理图，然后采用克隆步移法大规模测序，绘制基因组完成图。此外，研究人员还对另一个亚种籼稻品种广陆矮第四号染色体的序列也进行了测定，报道了水稻两个主要栽培稻在基因组成、顺序及DNA序列水平上的一些异同，揭示两者之间的一些亲缘和进化关系，这些数据为将来整个基因水平的比较提供了良好的示范。 韩斌博士还表示，目前世界上有一半以上的人口以水稻为主食。水稻基因组第四号染色体的序列分析结果和今后的功能基因组研究，可获得大量的水稻遗传信息和功能基因，为培育优良性状的水稻新品种打下良好的基础。同时此次测序成果，还将有助于了解小麦、玉米等其他重要粮食作物的遗传秘密，从而推动整个农作物基因组的研究。 加点的“大量的研究工作”是指( )。
2000年某国商品出口总额2492.11亿美元，比上年增长了27.8%，进口总额4378.27亿美元，比上年增长了35.9%。从地区的情况来看，东部地区出口总额2261.13亿美元，比上年增长27.5%，进口总额2250.96亿美元，比上年增长35.9%；中部地区出口总额为155.38亿美元，比上年增长33%，进口总额2063.50亿美元，比上年增长37.3%；西部地区出口总额75.60亿美元，比上年增长28%，进口总额63.81亿美元，比上年增长7.7%。 按出口增长率排序依次是( )。
Male advertisersFemale advertisers1MALE, aged 25, WLTM female, n/s, 20-30 for friendship, possible romance.I like pubs, clubs, staying in, aswell as going out. I live in theWindsor area and t get on well withkids.AFEMALE, 26, prof, fairlyslim, WLTM a slim male, 26-33, for friendship andpossible romance.2IF you are not separated oremotionally unstable but are a widowover 55 & looking for partner withview to long-term & meaningfulrelationship, then this 67 year oldwidower could be the one for you.BACTIVE lady, living inMaidstone area, early 60sWLTM females or males forfriendship and to shareinterests, mostly travel.3HL, I’m Andy, 32yo and divorced. Ahappy-go-lucky person looking for alady between 25 and 40. Single parentswelcome as I love children and a homelife.CARE you the romantic,friendly, articulate malewith varied interests and aGSOH that this woman islooking for If so and you’re40ish-50ish but feeling 30ishthen we will have a lot incommon.4MALE, 50s, caring, & sincere, with aGSOH, seeks an affectionate lady forfriendship, possible romance.DLADY, 40s, fairly slim, seeksa kind, generous, warm-hearted man, about same age,for friendship and outings.5I am an energetic man of 63, butdon’t look it. I have a good head ofhair. I like country find westernmusic and historical places, walking,a pint now and again. I’m stillworking part-time, but I don’t drive.I have a GSOH.EHELLO. my name is Liz. I am19 yrs old and live in theCambridge area. I am seekinga male 20-25. enjoy pubs andclubs and I like nights in orout and I like children. I AM5’5″ with red hair. In the ads all of the advertisers mention their （）
It is wise to remember that you do not have to buy anything from any salesperson. You ought to buy only those things you really need or want and can（1）. Try not to let your personal feelings about the salesperson（2） you to make a purchase. Remember that you are entitled to ask a salesperson any question you wish （3） the product or service, and you are entitled to get a clear, complete（4）. You call tell the salesperson you want to think about the matter, for a few days, （5） that you want to talk to other people who have purchased the product or service. You can walk（6） from a salesperson without a polite end to the conversation. If a salesperson telephones you, you do not have to listen to the person’s entire "lecture" or respond to it in a friendly way. You can simply interrupt the person and state that you are not interested in the product or service. You can simply（7） the telephone without saying anything.There are, of course, many salespeople who are genuinely interested in assisting you and in （8） you reasonable products and prices. If you are in （9） about the wisdom of a particular purchase, you might want to（10）another person who has had experience with the product or the service that interests you. If you receive unwanted goods in the mail, you are not obligated to pay for it. many salespeople who are genuinely interested in assisting you and in （） you reasonable products and prices.
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