问题 读图填空题

下图是利用现代生物工程技术治疗遗传性糖尿病(基因缺陷导致胰岛B细胞不能正常合成胰岛素)的过程设计图解,请据图回答:

(1)图中①所示的结构是_____________。

(2)图中②③所示的生物工程技术分别是____________、____________。

(3)过程②通常用去核卵细胞作受体细胞的原因除了它体积大、易操作外,还因为具有营养丰富且含有促进细胞核______的物质。

(4)过程③通常用胚胎干细胞作受体细胞的原因是这些细胞具有______,可以______形成组织、器官等。

(5)过程③的完成需要用到的基因操作工具有______________,______________,________________。

(6)图示方法与一般的异体移植相比最大的优点是______________________。

答案

(1)细胞核

(2)核移植技术 转基因技术(或重组DNA技术)

(3)全能性表达

(4)全能性 定向分化

(5)限制性内切酶 DNA连接酶 运载体

(6)没有排斥反应

阅读理解

A research found that people shown silent videos of piano competitions could pick out the winners more often than those who could also hear the music. It underlines the importance of our sense of vision, say scientists. Their study concludes that the best predictor of a winner’s musical performance was the visible passion they displayed, followed closely by their uniqueness and creativity.

Chia-Jung Tsay, from University College London, UK, is the study’s author and herself a concert pianist. She was interested in how music was judged and found that even professional musicians were unaware of how much they were using visual information over sound. “For the last two decades, I’ve taken part in various competitions. Through this experience, I found that depending on what type of evaluations were used, the results might vary widely. This led me to wonder about how much visual information really affects these important decisions,” she explained.

More than 1,000 participants in the study were given samples of either audio, silent video or video with sound, and asked to rate the top three finalists from 10 international classical music competitions. The actual competition winners were only correctly identified by those who were randomly assigned(分配) the silent videos.

Dr Tasy said the findings were quite surprising, especially because both trained musicians and those without training had stated that sound was most important for their evaluation. “Regardless of levels of expertise, we still seem to be led primarily by visual information, even in this field of music,” she said. “Classical music training is often focused on improving the quality of the sound, but this research is about getting to the bottom of what is really being evaluated at the highest levels of competitive performance. She added, “We must be more mindful of our inclination(倾向) to depend on visual information at the expense of the content that we actually value as more relevant to our decisions.”

小题1:According to the study, who would most probably win a piano competition? 

A.One who plays with great passion.

B.One who plays unique music.

C.One who plays creatively.

D.One who has a sense of vision.小题2:The participates in the study were asked to__________.

A.watch classical music competitions

B.assign the silent videos

C.pick out the best three competitors

D.decide who the winner is小题3:What probably led Dr Tsay to carry out the study?

A.Her love for music.

B.Her desire to explore.

C.Her experience as a competitor.

D.Her curiosity in musical education.小题4:Where does this text probably come from?

A.A text book.

B.A sports magazine.

C.A story book.

D.A science website.

单项选择题 B1型题