Most of the eukaryotic genes are mosaic (嵌合体), consisting of intervening sequences separating the coding sequence ◼ Exons (外显子): the coding sequences ◼ Introns (内含子) : the intervening sequences ◼ RNA splicing: the process by which introns are removed from the pre￾mRNA. ◼ Alternative splicing (可变剪接): some pre-mRNAs can be spliced in more than one way , generating alternative mRNAs. 60% of the human genes are spliced in this manner

Define the following terms: 1. design feature:are features that define our human languages,such as arbitrariness,duality,creativity,displacement,cultural transmission,etc. 2. function: the use of language tocommunicate,to think ,etc.Language functions inclucle imformative function,interpersonal function,performative function,interpersonalfunction,performative function,emotive function,phatic communion,recreational function and metalingual function

Medical Genetics Genes are entities that parents pass to offspring during reproduction

Section I Use of English Directions: Read the following text. Choose the best word(s) for each numbered blank and mark A,B,C or D on ANSWER SHEET l.(10 points) The human nose is an underrated tool Humans are often thought to be insensitive smellers compared with animals, (1)

friends. Whatever the comment, true As a human being, one can hardly do friendship must be firmly based on trust without a friend. As the old saying goes ng. If a friendsh no man is an island In other words, no stand the test of a difficult experience and one can survive without the help and if one feels confident that, no matter friendship of others. And every sign

人力资源概述 人力资源（Human Resources），也称为 劳动力资源，是指人口总体所具有的劳动能力 的总和。或者说，指能够投入经济和社会发展 活动的具有智力和体力劳动的人们的总和

一、 人力资源内涵与特征 （一）人力资源内涵 1、 人力资源的定义 人力资源（Human Resource）是指一定范围内的人口总体所具有劳动能力的总和。 或者说是指能够推动社会和经济发展的具有智力和体力劳动能力的人的总称

Good evening, my fellow Americans: Tonight I want to speak to you of peace in Vietnam and Southeast Asia. No other question so preoccupies our people. No other dream so absorbs the 250 million human beings who liv e in that part of the world. No other goal motivates American policy in Southeast Asia. For years, representatives of our Governments and others have traveled the world seeking to find a basis for peace talks. Since last September they have carried the off er that I made public at San Antonio. And that offer was this:

(一) 立项依据与研究内容（4000-8000字） 1. 项目的立项依据（附主要的参考文献目录） 现代药品大多是热敏性药品，即对温度(主要是高温)比较敏感的药品，如脂质体 （liposome）、干扰素(interferon)、组织型纤维蛋白溶酶原激活剂(tissue type plasminogen activator)、白细胞介素(interleukin)、生长激素(human growth hormone)等，还有我国的 中草药。在生产热敏性药品时，为防止由于温度过高而使药品变性，影响产品的质量， 目前广泛应用的技术是真空冷冻干燥技术(freeze-drying，lyophilization)

The taming of fire, permitting the thermal processing of vegetable foodstuffs in particular, extended enormously the number of natural products that could be used as foods by humans and gave a tremendous impulse to the extraordinary dif￾fusion and development of the human population in almost every region of the world (De Bry, 1994). Foodstuffs can be roughly divided in two classes, those that are or are not edible in their raw form. The most important naturally edible foods are meat and milk, which are heated mainly for eliminating dangerous microorganisms, and some fruits, used by plants to attract animals for diffusing