2021届高考英语复习之高考真题阅读词块精析(四十)学案
展开The traffic signals alng Factria Bulevard in Bellevue, Washingtn, generally dn’ t flash the same length f green twice in a rw, especially at rush hur. At 9:30 am, the full red/yellw/green signal cycle might be 140 secnds. By 9:33 am, a burst f additinal traffic might push it t 145 secnds. Less traffic at 9:37 am culd push it dwn t 135. Just like the traffic itself, the timing f the signals changes.
That is by design. Bellevue, a fast-grwing city, just east f Seattle, uses a system that is gaining ppularity arund the US:intersectin(十字路口) signals that can adjust in real time t traffic cnditins. These lights, knwn as adaptive signals, have led t significant declines in bth the truble and cst f travels between wrk and hme.
“Adaptive signals can make sure that the traffic demand that is there is being addressed,” says Alex Stevanvic, a researcher at Flrida Atlantic University.
Fr all f Bellevue’s success, adaptive signals are nt a cure-all fr jammed radways. Kevin Balke, a research engineer at the Texas A&M University Transprtatin Institute, says that while smart lights can be particularly beneficial fr sme cities, thers are s jammed that nly a sharp reductin in the number f cars n the rad will make a meaningful difference. “It’s nt ging t fix everything, but adaptive signals have sme benefits fr smaller cities,” he says.
In Bellevue, the switch t adaptive signals has been a lessn in the value f welcming new appraches. In the past, there was ften an autmatic reactin t increased traffic: just widen the rads, says Mark Pch, the Bellevue Transprtatin Department’s traffic engineering manager. Nw he hpes that ther cities will cnsider making their streets run smarter instead f just making them bigger.
词块梳理
1:signal
英[ˈsɪɡnəl] 美[ˈsɪɡnəl]
n. 信号;红绿灯
v. 发信号;示意
adj. 重大的
变形
副词:signally
过去分词:signalled
现在分词:signalling
过去式:signalled
复数:signals
第三人称单数:signals
双语例句
1.Experts regarded it as a warning signal f an ecnmic smashup.
专家们把它看作是一场经济灾难的警告信号.
2.The carrier wave has gt ut f phase with the signal wave.
载波同信号波是异相的.
3.This is a signal failure.
这是明显的失败.
2:flash
英[flæʃ] 美[flæʃ]
n. 闪耀;突发;闪现;闪光灯;简章
v. 使闪光;飞驰;突然想到;快速出示;使闪现;快速发送;瞥(一眼);发光
adj. 奢华的
变形
过去分词:flashed
现在分词:flashing
过去式:flashed
第三人称单数:flashes
双语例句
1.Five years have elapsed in a flash.
一晃就是5年.
2.Like a flash f lightning, the meter sht acrss the sky.
流星像一道闪光划过天空.
3.With a flash, the kersene lamp went ut.
煤油灯闪了闪就灭了.
3:cycle
英[ˈsaɪkl] 美[ˈsaɪkl]
v. 骑自行车
n. 自行车;摩托车;整套;循环;组诗
变形
过去分词:cycled
现在分词:cycling
过去式:cycled
复数:cycles
第三人称单数:cycles
双语例句
1.Which is cmmnly used in the tw speed 100 km fuel cycle and cnsumptin.
其中常用的两种是等速百公里油耗和循环工况油耗.
2.The accumulatin, distributin and cycle f N, P and K in S . apetala + S.
研究了深圳福田红树林无瓣海桑+海桑群落的N 、 P、K元素的累积和循环.
3.Yu've gt t be especially careful when yu cycle n snw.
雪地上骑车要格外小心.
4:ppularity
英[ˌpɒpjuˈlærəti] 美[ˌpɑːpjuˈlærəti]
n. 流行,普及;声望
双语例句
1.Several unppular decisins diminished the gvernr's ppularity.
几项不得人心的决定使州长的声望下降.
2.Our prduct enjys ppularity thrughut the wrld.
我们的产品饮誉全球.
3.They brught in new tax laws in a bid t restre their ppularity.
他们提出了新税法,力求重新赢得人心.
5:intersectin
英[ˌɪntəˈsekʃn] 美[ˌɪntərˈsekʃn]
n. 横断,横切;交叉,相交;交叉点,交叉线;[数]交集
变形
复数:intersectins
双语例句
1.The key pint which cnstrains the urban rad capacity is the intersectin.
城市道路交通通行能力制约关键在交叉口.
2.The pliceman regulated traffic at the intersectin.
警察在交叉路口指挥交通.
3.In this paper , we present a nvel parametric surfaces intersectin algrithm based n discrete surfels.
提出了一种基于点元的参数曲面求交交互式新算法.
6:adaptive
英[əˈdæptɪv] 美[əˈdæptɪv]
adj. 适应的;有适应能力的
双语例句
1.A simple adaptive cntrl system was designed fr cnstant tensin f duble stand revere rlling mill.
为保证双机架可逆冷轧机轧制中带钢恒张力,设计了恒张力简单自适应控制系统.
2.At last, the adaptive cntrller is designed accrding t the mdel reference adaptive cntrl thery.
最后, 根据模型参考自适应控制原理,设计了自适应控制器.
3.An adaptive cntrl algrithm was put frward aiming at tw main prblems existing in the system.
针对此类系统存在的主要问题,提出一种适应或控制算法.
7:decline
英[dɪˈklaɪn] 美[dɪˈklaɪn]
v. 减少;衰落;下降;衰退;婉拒;(单词)变格
n. 下降,减少;衰落
变形
过去分词:declined
现在分词:declining
过去式:declined
第三人称单数:declines
双语例句
1.The decline f sales embarrassed the cmpany.
销路下降使公司陷于财政困难.
2.His father is n the decline.
他父亲的身体越来越弱.
3.Prices at the fairs are stable with a slight decline.
价格稳中有降.
8:demand
英[dɪˈmɑːnd] 美[dɪˈmænd]
v. 强烈要求;需要
n. 要求;所需之物;需求
变形
过去分词:demanded
现在分词:demanding
过去式:demanded
复数:demands
第三人称单数:demands
双语例句
1.This washing machine was guaranteed frm mechanical failure — I demand a new ne!
这台洗衣机出售时曾担保过不出机械性故障——我要换一台新的.
2.The supply is inadequate t meet the demand.
供不应求.
3.We demand a definite answer.
我们要求明确的答案.
9:jammed
英[dʒæmd] 美[ dʒæmd]
adj. 机器出故障等无法正常运转;壅塞
双语例句
1.She lked at the bks jammed haphazardly in the shelves.
她看着乱七八糟地塞在书架上的那些书。
2.The marketplace was jammed with a nisy crwd f buyers and sellers.
集市上熙熙攘攘挤满了买卖东西的人。
3.Cracks appeared in the wall and a dr jammed shut.
墙上出现了裂缝,一扇门卡住打不开了。
10:apprach
英[əˈprəʊtʃ] 美[əˈprʊtʃ]
v. 接近,临近;对付,处理;接洽,要求
n. 方法,方式;接近,来临;接洽,要求;途径,道路;相似的事物
变形
过去分词:apprached
现在分词:appraching
过去式:apprached
复数:appraches
第三人称单数:appraches
双语例句
1.At the apprach f cld weather, the trps were unable t keep hlding the field.
寒冷的天气到来时, 部队无力继续作战.
2.She culd tell the apprach f the milkman by the whistled ntes that smehw always flatted.
她能从那总是偏低的口哨声听出送奶人的到来.
3.The scut made a stealthy apprach t the enemy psitin.
侦察兵偷偷地靠近敌军阵地.
11:reactin
英[riˈækʃn] 美[riˈækʃn]
n. 反应(能力);不良反应;化学反应;抗拒,反对
变形
复数:reactins
双语例句
1.Can yu gauge what her reactin is likely t be?
你能揣测她的反应可能是什么 吗 ?
2.Their reactin t the jke is t laugh.
他们对这个笑话的反应是笑.
3.Nail biting is ften a subcnscius reactin t tensin.
咬指甲通常是紧张时的下意识反映.
12:instead
英[ɪnˈsted] 美[ɪnˈsted]
adv. 替代;反而
双语例句
1.Jim shuld get a jb instead f llling arund the huse all day.
吉姆应该找份工作,不要成天闲在家里.
2.He philsphises instead f actually ding smething.
他不动手实干,却大谈理论.
3.Instead f electricity, there were kersene lanterns.
没有电, 有煤油灯.
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