Question

    You try to keep your eyes wide open while watching a basketball match or a wonderful firework show in case you might miss something exciting in just the blink (眨眼睛) of an eye. But in fact, humans blink about 15 times per minute on average. Have you ever missed anything because you blinked? Probably not. Why is that?

According to a new study published in the journal Current Biology in September, our brain has the ability to skip the temporary darkness when we blink. It can keep visual information for a short period of time and then put it together to form an image without interruption.

In order to understand how this works, a group of scientists at the German Primate Center and the University Medical Center Gottingen in Germany conducted an experiment. In the study, the participants were asked to look at patterns on a screen whose direction could be shown in different ways, such as horizontally or vertically (垂直地). When one pattern was about to disappear and the next one was about to come, the participants had to indicate the direction that the next pattern would appear.

The researchers found that when the directions of two patterns didn’t match, the area in our brain which is responsible for visual memory was activated. This same area showed less activity when two patterns were in the same direction.

“The medial prefrontal cortex (前额叶皮层) adjusts current visual information with previously obtained information, and thus enables us to sense the world with more stability, even when we briefly close our eyes to blink，” Caspar Schwiedrzik explained in Science Daily. He is the first author of the study and also a scientist at the German Primate Center.

1.We don’t miss anything when blinking because our brain can ________.

A.remember all that we see B.deal with the missing image

C.imagine what our eyes miss D.recognize our pieces of memory

2.What does the underlined word “it” in Paragraph 2 refer to?

A.Visual information. B.Our brain.

C.Current Biology. D.The temporary darkness.

3.What do we know about the experiment?

A.The different directions activated visual memory.

B.Visual memory can be more activated by similarity.

C.Participants can interpret patterns differently.

D.The two patterns appear at the same time.

4.The passage is mainly talking about ________.

A.the brain’s structure B.the brain’s special skill

C.the brain’s activated patterns D.the brain’s directions

Answer

1.B

2.A

3.A

4.B

【解析】

这是一篇说明文。文章主要介绍了研究发现眨眼并不会错过细节，并解释了其原因。即大脑有能力在短时间内保存视觉信息，然后将其组合在一起形成不中断的图像信息。

1.

细节理解题。根据第二段第一句“According to a new study published in the journal Current Biology in September, our brain has the ability to skip the temporary darkness when we blink.”可知，九月份发表在《当代生物学》杂志上的一项新研究表明，我们的大脑有能力跳过我们眨眼时形成的暂时黑暗。据此可推知，由于我们的大脑能处理丢失的图像，所以眨眼不会让我们错过任何东西。故选B项。

2.

词义猜测题。分析可知，“it”作为代词指代前文提及内容。根据第二段第一句“According to a new study published in the journal Current Biology in September, our brain has the ability to skip the temporary darkness when we blink.(根据9月份发表在《当代生物学》(Current Biology)杂志上的一项新研究，我们的大脑有能力在眨眼时跳过暂时的黑暗。)”可推知第二句“It can keep visual information for a short period of time and then put it together to form an image without interruption.( 大脑可以在短时间内保存视觉信息，然后将其组合在一起形成不中断的图像。)”中主语“it”指代上文中的“visual information”。故选A项。

3.

推理判断题。根据第四段中的“…when the directions of two patterns didn’t match, the area in our brain which is responsible for visual memory was activated. This same area showed less activity when two patterns were in the same direction”可知，当两种模式的方向不一致时，掌握视觉记忆的大脑区域被激活；当两种模式在同一方向时，这个区域显示出较少的活动。据此可知，不同的方向能激活视觉记忆。故选A项。

4.

主旨大意题。通读全文可知，本文文章结构为总分结构，第一段段末提出本文的中心话题“But in fact, humans blink about 15 times per minute on average. Have you ever missed anything because you blinked? Probably not. Why is that?”因而可知本文主要介绍了一项科学研究。研究表明，眨眼不会错过细节，并解释了其原因，即大脑有能力在短时间内保存视觉信息，然后将其组合在一起形成不中断的图像信息。C项“The Brain’s Special Skill(大脑的特殊技能)”贴合文章主旨。故选B项。