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American and Japanese researchers are developing a smart car that will help drivers avoid accidents by predicting when they are about to make a dangerous move.

The smart car of the future will be able to tell if drivers are going to turn, change lanes, speed up, slow down or pass another car.

If the driver’s intended action could lead to an accident,the car will activate a warning system or override the move.

(46) " BY shifting the emphasis of car safety away from design of the vehicle itself and looking more toward the driver’s behavior, the developers believe that they can start to build cars that adapt to suit people’s needs , " New Scientist magazine said.

Alex Pentland of the Massachusetts Institute of Technology collaborated on the project with Andrew Liu who works for the Japanese carmaker Nissan.

(47)Tests of their smart car using a driving simulator have shown that it is 95 percent accurate in predicting a driver’s 12 seconds in advance.

(48)The system is based on driving behavior which the researchers say can be divided into chains of sub-actions which include preparatory moves.

It monitors the driver’s behavior patterns to predict the next move.

" To make its predictions, Nissan’s smart car uses a computer and sensors on the steering wheel, accelerator and brake to monitor a person’s driving patterns. (49)A brief training session, in which the driver is asked to perform certain maneuvers, allows the system to calculate the probability of particular actions occurring in two-second time segments, " the magazine said.

Liu has also done work on tracking eye movement to predict driving behavior. (50)He said the smart car could be adapted to monitor eye movement which could give even earlier predictions of when a driver is about to make a wrong move.

(47)Tests of their smart car using a driving simulator have shown that it is 95 percent accurate in predicting a driver’s 12 seconds in advance.

答案

参考答案:

[参考译文] 用模拟驾驶装置对智能汽车的测试表明,提前12秒预测驾驶员动作的准确性达到95%。

解析:

句子框架是Tests…have shown that it is 95 percent accurate in…。此句的主干包含了一个宾语从句:Tests…have shown that…。using a driving simulator是现在分词短语作定语,修饰smart car。that宾语从句中的介词in表示“在…方面”。move在这里作名词,in advance翻译为“提前”。

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教学设计题:

观潮

钱塘江大潮,自古以来被称为天下奇观。

农历八月十八是一年一度的观潮日。这一天早上,我们来到了海宁县的盐官镇,据说这里是观潮最好的地方。我们随着观潮的人群,登上了海塘大堤(dī)。宽阔的钱塘江横卧在眼前。江面很平静,越往东越宽,在雨后的阳光下,笼罩(zhào)着一层蒙蒙的薄雾。镇海的古塔、中山亭和观潮台屹(yi)立在江边。远处,几座小山在云雾中若隐若现。江潮还没有来,海塘大堤上早已人山人海。大家昂首东望,等着,盼着。

午后一点左右,从远处传来隆隆的响声,好像闷雷滚动。顿时人声鼎(dǐng)沸(fèi),有人告诉我们,潮来了!我们踮着脚往东望去,江面还是风平浪静,看不出有什么变化。过了一会儿,响声越来越大,只见东边水天相接的地方出现了一条白线,人群又沸腾起来。

那条白线很快地向我们移来,逐渐拉长,变粗,横贯(guàn)江面,再近些,只见白浪翻滚,形成一道两丈多高的水墙。浪潮越来越近,犹如千万匹白色战马齐头并进,浩浩荡荡地飞奔而来;那声音如同山崩地裂,好像大地都被震得颤动起来。

霎时,潮头奔腾西去,可是余波还在漫天卷地涌来,江面上依旧风号(háo)浪吼(hǒu)。过了好久,钱塘江才恢(huī)复了平静。看看堤下,江水已经涨了两丈来高了。

简要分析本文的写作特点。