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试叙述近期Nature或Science上发表的你感兴趣的一篇论文主要的研究内容。

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更多“试叙述近期Nature或Science上发表的你感兴趣的一篇…”相关的问题

第1题

Physics is ___ to the science which was called nature philosophy in history.

A、alike

B、equivalent

C、likely

D、uniform

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第2题

下列关于癫狂诊断依据的叙述中，错误的是（)A、神情抑郁，表情淡漠，喃喃自语为癫B、突然狂奔，呼号

下列关于癫狂诊断依据的叙述中，错误的是()

A、神情抑郁，表情淡漠，喃喃自语为癫

B、突然狂奔，呼号打骂，不避亲疏为狂

C、有癫狂的家族史，或脑外伤史

D、多发于青壮年女性，素日性格内向，近期情志不遂

E、突然昏仆，不省人事，半身不遂

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第3题

试结合一个近期的实例分析在进行报道策划时需要把握的信息。

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第4题

《Science》杂志上披露，大多数遗传病可体外诱导，通过诱变剂引起DNA中碱基替换。发展一种快速诊断战略，以便进行

疾病基因型的鉴定。

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第5题

下列有关肝炎病毒标志物检查的叙述，错误的是A、抗-HEVIgM阳性可诊断为HEV近期感染B、HBsAg和HDAg均

下列有关肝炎病毒标志物检查的叙述，错误的是

A、抗-HEVIgM阳性可诊断为HEV近期感染

B、HBsAg和HDAg均呈阳性，可诊断为HDV及HBV现症感染

C、HCV-RNA阳性可诊断为HCV现症感染

D、抗-HBc阳性可诊断为HBV现症感染

E、抗-HAVIgM阳性可诊断为HAV近期感染

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第6题

复本信度是指用同一个量表(测验或评价表)对同一组被试施测两次所得结果的一致性程度，其大小等于同一组被试在两次测验上所得分数的相关系数。()

复本信度是指用同一个量表（测验或评价表)对同一组被试施测两次所得结果的一致性程度，其大小等于同一组被试在两次测验上所得分数的相关系数。（)

A、错误

B、正确

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第7题

Economics is the study of how societies with limited resources decide what to produce, how

to produce and for whom to produce. What, how, and for whom to produce are problems all over the world because human wants are practically unlimited, but all societies have only limited quantities of resources that can be used to produce goods or services. A knowledge of basic economics is important for understanding both the problems and opportunities that will face the world economy in the 21st century. As a student of economics, one will have the chance to discover how commerce, government policies, and day-to-day decisions made by consumers affect his living standards. The study of economics can help him understand the influence of such events as the move to free markets in Poland and Russia, or of ups and downs in interest rate and the foreign exchange rate. Economics is influenced by developments in the many different areas of business, politics, science, nature, religion and history. And whether or not one is aware of it, economics is an important part of his life. From a practical point of view, one s study of economics will help improve his decision-making skills. He learns a logical way to compare different courses of action. As he studies the concept of opportunity cost, for instance, he will discover that every choice he makes has both a benefit and a cost. Suppose someone decides to get a part time job so he can earn enough money to buy a car. He will have the benefit of owning the car, but he will pay a cost in terms of the leisure hours he gives up for working so as to pay for the car and keep it in good condition. After weighing his choice in cost-benefit terms, he may decide he does not need a car any more.

According to the passage, economics is studied to______.

A．get more resources for human beings

B．put human wants under some control

C．satisfy the unlimited human wants with the limited resources

D．produce better goods and services for all human beings

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第8题

复本信度是指用同一个量表(测验或评价表)对同一组被试施测两次所得结果的一致性程度，其大小等于同一组被试在两次测验上所得分数的相关系数。()

A、错误

B、正确

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第9题

果蝇中，tra基因pre－mRNA的替换拼接涉及到对两个竞争的3'拼接位点的选择，这个雌性特异性（FS)3'拼接

果蝇中，tra基因pre-mRNA的替换拼接涉及到对两个竞争的3'拼接位点的选择，这个雌性特异性(FS)3'拼接位点在基因终止密码子的下游，而非性别特异性(NSS，在雌性和雄性中都使用)拼接位点在终止密码子的上游，这两个拼接位点前面都有一个多聚嘧啶区域(Py-Fs和Py-NSS，见图解)。

当UZAF结合到Py-Fs或Py-NSS上时3'拼接位点就被选择。UZAF在所有细胞中都存在，而Sxl(性致死蛋白)仅存在于雌性中。Sxl是一种RNA结合的蛋白，同UZAF一样，结合于富含嘧啶的RNA上。Valearcel et. al(Nature 362，171-175，1993)测出了Sxl、UZAF蛋白质与Py-FS、Py-NSS的结合能力，其结果概括如下表：

UZAF Sxl

Py-NSS strong very strong

Py-FS moderate none

对于这些结果，请设计一种特殊的模型，这种模型能够解释Sxl蛋白质导致tra基因pre-mRNA的雌性特异性拼接。

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第10题

试叙述敏感性分析的步骤。

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第11题

用同一个量表（测验或评价表)对同一组被试测两次所得结果的一致性程度，其大小等于同一组被试在两次测验上所得分数的相关系数，这一概念是（)。

A.复本信度

B.重测信度