必修3 Unit 1 The world of our ns
能力提升题组训练(A)
Ⅰ.阅读理解
(2018北京海淀区高三二模)
Why Do People Blink Their Eyes?
People blink(眨眼)their eyes tens of thousands of times every day.Scientists have long believed blinking was an involuntary movement and rved mainly to keep the eyeballs wet.But a new study suggests it has a more important purpo.
An international team of scientists from the University of California at Berkeley studied the b
linking of human eyelids.The journal Current Biology published their findings.The team said they found that blinking “repositions our eyeballs so we can stay focud” on what we are eing.They said that when we blink our eyelids,the eyes roll back into their sockets—the bony area that surrounds and protects the eyes.However,the rearchers found the eyes don’t always return to the same position.They said this caus the brain to tell the eye muscles to reorganize our eyesight.
Gerrit Maus is the lead writer of the report.He rves as an assistant professor of psychology at Nanyang Technological University in Singapore.Maus said,“永远 英文Our eye muscles are quite sluggish(迟缓的)and impreci,so the brain needs to constantly adapt its motor signals to make sure our eyes are pointing where they’re suppod to.Our findings suggested that the brain measures the difference in what we e before and after a blink,and commands the eye muscles to make the needed corrections.” The rearchers said that without such corrections our surroundings would appear unclear and even jumpy.They said the movement acts “like a steadicam(摄影机稳定器)of the mind.”
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2014年山东高考数学
The rearchers said they asked volunteers to sit in a dark room while staring at a small dot on a flat surface.They ud special cameras to follow the volunteers’ blinks and eye movements.After each blink,the dot was moved one centimeter to the right.The volunteers did not notice this,but the brain did.It followed the movement and directed the eye muscles to refocus on the dot.After the dot was moved in this way 30 times,the volunteers’ eyes changed their focus to the place where they predicted it would be.
Professor Maus said,“Even though participants did not consciously register that the dot had moved,their brains did,and adjusted with the corrective eye movements.The findings add to our understanding of how the brain constantly adapts to changes,commanding our eye muscles to correct for errors in our bodies’ own hardware.”
1.According to the new study,blinking eyes can 2013四六级.
A.rve to keep the eyeballs wet B.reposition eyeballs to stay focud
C.consciously correct eye movements D.make our eyes adapt to motor signals
2.From the experiment,we can learn that .
A.volunteers could e the moving dot with special cameras
B.the eyeballs could stay in the place as they were predicted
C.participants were aware of the dot’s movements to the right
D.the brain commanded the eye muscles to refocus on the dot
3.The underlined word “register” in Paragraph 5 probably means .
A.realize B.refocus C.rerve D.reason
4.This passage shows that .
A.eye muscles are quite inactive and impreci
B.the rearch is of great value in the eye movement
C.the brain plays an important role in eing things clearly
D.volunteers control their blinks to follow the changes of the dot
语篇解读:本文是一篇说明文。科学家们认为眼球的不断闪烁有一个更重要的用途——让我们可以保持眼神的集中。
答案及剖析bdg是什么意思:
1.B 细节理解题。根据The team said they found that blinking“ repositions our eyeballs so we can stay focud”on what we They said this caus the brain to tell the eye muscles to reorganize our eyesight.可知,眨眼睛是在复位我们的眼球,这样我们可以专注于我们所看到的。故选B英语单词记忆法。
2.D 细节理解题。根据pupil怎么读音After each blink,the dot was moved one centimeter to the right.The volunteers did not notice this,but the brain did.It followed the movement and directed the eye muscles to refocus on the dot.可知,是我们的大脑指挥着眼部肌肉,使得眼球重新聚焦在点上。故选paradoxical frogD
3.A 词义猜测题。本句句意为“即使参与者没有意识到点的移动,但是他们的大脑意识到了,
并调整矫正眼球随之运动。”故选A。
warned
4.C 主旨大意题。由全文内容可知,我们的大脑指挥着眼部肌肉,通过眨眼睛的动作复位我们的眼球,使得眼球重新聚焦在我们看的物体上。所以,大脑在我们看清物体方面起着重要作用。故选C。
Ⅱ.七选五
(2018安徽合肥联考)
A new report says plastics are responsible for $13 billion in damage to the oceans and the undera environment.The findings were announced recently at a United Nations conference.1.
Plastic thrown away carelessly makes its way into rivers and other waterways.2.
After a while,it collects in the a.And plastic never goes away.Plastic is not biodegradable—destroyed by bacteria or natural process.Instead,it just breaks up into smaller pieces over time.The oceans contain a lot of chemicals and other pollutants(污染
物).3. That means harmful material may get into our food supply. 出国留学哪些国家好
4. Human beings cau pollution and they can take steps to stop it.They can u fewer single-u product containers and throw plastics away correctly. Plastic recycling programs also work—where old bottles and other plastics are collected,broken down and ud to make new products.We could reu bottles in our houholds many times if we wish to,rather than end it after the first u.We could, when we get rid of that plastic,recycle it and reu it,which replaces the need for raw materials.
