外研版 (2019)选择性必修 第三册Unit 4 A glimpse of the future一课一练

这是一份外研版 (2019)选择性必修 第三册Unit 4 A glimpse of the future一课一练，共4页。

Fr thse wh hunger fr sme peace and quiet, sund can nw create silence. Let’s say yu are at the airprt, and the little by n the seat next t yu is humming(哼唱) a shrt cmmercial sng. He hums it ver and ver again, and yu are abut t g crazy. Thanks t the Silence Machine, a British inventin, yu can get rid f the sund withut upsetting the by r his parents. One may wnder hw the Silence Machine wrks. Well, it functins by analyzing the waves f the incming sund and creating a secnd set f utging waves. The tw sets f waves cancel each ther ut. Simply turn the machine n, pint it at the target, and yur peace and quiet cmes back.
Directed sund is a new technlgy that allws cmpanies t use sund in much the same way sptlights(聚光灯) are used in the theater. A sptlight lights up nly ne sectin f a stage; similarly, a “sptsund” creates a circle f sund in ne targeted area. This can be useful fr businesses such as restaurants and stres because it ffers a new way t attract custmers. Restaurants can ffer a chice f music alng with the varius fd chices n the menu, allwing custmers mre cntrl ver the atmsphere in which they are dining. Directed sund is als beginning t appear in shpping centers and even at hmes.
1. What culd be inferred frm Paragraph 2 abut the effect f the LRAD?
A. It causes temprary hearing lss.
B. It slws dwn a running man.
C. It makes it easy t identify a suspect.
D. It keeps the suspect frm hurting thers.
2. The Silence Machine is a device specially designed t ________.
A. silence the peple arund yu
B. remve the sund f cmmercials
C. blck the incming sund waves
D. stp unwanted sund frm affecting yu
3. What feature d sptsunds and sptlights share?
A. They travel in circles.
B. They clear the atmsphere.
C. They can be transfrmed int energy.
D. They can be directed nt a specific area.
4. Directed sund can be used fr ________.
A. creative designs f restaurant menus
B. ideal sund effects n the theater stage
C. different chices f music fr businesses
D. strict cntrl ver any suspicius custmer
5. What des the passage fcus n?
A. Hw prfessinals invented sund prducts.
B. Inventins in the field f sund technlgy.
C. The grwing interest in the study f sund.
D. Hw sund engineers wrk in their studis.
【语篇导读】本文主要介绍了声音技术方面的一些新发明及其在各个领域的应用，如利用远程定向声波发射器抓捕窃贼，用静音机处理周围噪音，以及定向声音在商业活动中的应用等。
1. A推理判断题。根据第二段倒数第二句It prduces a deafening sund s painful that it temprarily disables a persn.可知，远程定向声波发射器对人的影响是它可以发出震耳欲聋的声音，使人痛得暂时失去听觉，故选A项。
2. D 细节理解题。根据第三段中的Thanks t the Silence Machine... yu can get rid f the sund ...和该段最后一句的内容可知，静音机的作用是避免让那些你不想听到的声音影响你。故选D项。
3. D 细节理解题。根据第四段第二句A sptlight lights up nly ne sectin f a stage; similarly, a “sptsund” creates a circle f sund in ne targeted area.可知，聚光灯和定向声音的相似之处在于聚光灯照亮舞台的一个部分，定向声音也是在一个目标区域形成一个声音圈。由此可知，二者的共同特点是它们可以被引到一个特定的区域，故选D项。
4. C细节理解题。根据第四段的内容可知，定向声音的作用是在一个目标区域形成一个声音圈。这对于像餐馆和商店这样的企业吸引顾客是很有用的。再结合第四段第四句Restaurants can ffer a chice f music alng with the varius fd chices n the menu, allwing custmers mre cntrl ver the atmsphere in which they are dining.可知，定向声音在餐厅的应用是，顾客可以在菜单上选择食物的同时选择自己想要的音乐，这让顾客更加能控制自己就餐的气氛。由此可知，定向声音可以应用于商业中对不同音乐的选择，故选C项。
5. B主旨大意题。通读全文可知，本文主要讲述了声音技术方面的一些新的发明在不同领域中的应用，列举了如何利用远程定向声波发射器抓捕窃贼，如何利用静音机处理不想听到的声音以及定向声音可用于一些商业活动中来吸引顾客。综合分析可知，本文主要介绍了声音技术领域的发明。故选B项。
【微技能】如何归纳文章主旨
由于文章体裁不同，文章主旨呈现的方式与程度也各异，在做英语阅读时，应灵活应对。
一般而言，文章主旨通过主旨句甚至主旨段呈现。主旨句一般在文章开头，如新闻类文章，开门见山表达主旨，以引起读者关注；当然也月在文平尾段以概括总结性的句式呈现的，比如议论文，文章主旨往往以结论方式出现在文末。总之，不论主旨句在什么位置，只要抓住那些表明作者立场、观点、情感、态度的句子，仔细分析其是否能统领全文，就能找到文章的主旨。
有些文章没有明显的主旨句，那就需要进行篇章结构分析，找出每一小段的主题，进行对比总结，梳理行文逻辑，找到语段间的内在联系和逻辑结构，从整体上把握文章，从而归纳整篇文章的主旨。这种文章往往话题严肃而深刻，篇章逻辑严谨，不可仅从一两个关键词或中心句就上升到文章主旨，以偏概全。