An Intelligent Car

Driving needs sharp eyes, keen ears, quick brain, and coordination between hands and the brain. Many human drivers have all 1 and can control a fast-moving car. But how does an intelligent car control itself?

There is a virtual driver1 in the smart car. This virtual driver1 has “eyes,” “brains,” “hands” and “feet,” too. The minicameras 2 each side of the car are his “eyes,” which observe the road conditions ahead of it. They watch the 3 to the car’s left and right. There is also a highly 4 driving system in the car. It is the built-in computer, which is the virtual driver’s “brain.” His “brain” calculates the speeds of 5 moving cars near it and analyzes their positions. Basing on this information2, it chooses the right 6 for the intelligent car, and gives to the “hands” and “feet” to act accordingly. In this way, the virtual driver controls his car.

What is the virtual driver’s best advantage3? He reacts 8 . The minicameras are 9 images continuously to the “brain.” It 10 the processing of the images within 100 milliseconds. However, the world’s best driver 11 needs one second to react. 12 , when he takes action, he needs one more second.

The virtual driver is really wonderful. He can reduce the accident 13 considerably on expressways. In this case, can we let him have the wheel4 at any time and in any place? Experts 14 that we cannot do that5 just yet6. His ability to recognize things is still 15 . He can now only drive an intelligent car on expressways.

詞匯： coordination n. 協(xié)調(diào)，協(xié)同

accordingly adj. 相應(yīng)地 virtual adj. 虛擬的

millisecond n. 毫秒 minicamera n. 微型相機(jī) expressway n. 高速公路注釋：

1. virtual driver：虛擬駕駛員

2. Basing on this information：基于這些信息。 Basing on this information是現(xiàn)在分詞短語(yǔ)，用作狀語(yǔ)。

3. best advantage：昀大的優(yōu)點(diǎn)

4. have the wheel：掌握方向盤(pán)，也就是“駕駛汽車”的意思。

5. that：that替代上一句的“ let him have the wheel at any time and in any place”。

6. just yet：迄今還。 yet意為“迄今還”，常用于否定句中。 Just修飾 yet，起強(qiáng)調(diào)的作用。

練習(xí)：

1. A these B them C this D that

2. A within B above C to D on

3. A police B traffic C trucks D buses

4. A mechanical B movable C automatic D electronic

5. A another B other C each other D one another

6. A line B lane C track D path

7. A space B location C instructions D time

8. A quickly B cleverly C virtually sending D safely

9. A bringing B taking C sending D carrying

10. A selects B completes C uses D tests

11. A at least B at most C at last D at best

12. A So B However C Besides D Therefore

13. A count B amount C digit D rate

14. A warn B suggest C invite D check

15. A unknown B few C untested D limited

答案：1. A第一句提到的是 eyes，ears，brain等，指示代詞應(yīng)該用復(fù)數(shù)形式的 these，不能選 this或 that。選 them也不對(duì)，因?yàn)?all them不符合習(xí)慣用法，正確的說(shuō)法是 all of them。

2. D side前面要求用介詞 on。

3. B選項(xiàng) B：traffic意思是“流動(dòng)的車輛”，是本題的答案。 police (警察)、trucks（重型卡車）和 buses（公共汽車）表達(dá)的意思都是路況的一部分，顯然與現(xiàn)實(shí)不符。

4. C 從上下文判斷，本句的意思應(yīng)該是高度自動(dòng)化的駕駛系統(tǒng)，所以答案是 automatic。其余三個(gè)選項(xiàng)（mechanical機(jī)械的， movable可移動(dòng)的， electronic電子的）表達(dá)的意思與上下文配不上。

5. B 從上下文判斷，本句說(shuō)的是“其他流動(dòng)的車輛”，所以要選用 other。Another意為“另一個(gè)”， each other和 one another都是“互相”的意思，與上下文表達(dá)的意思相去甚遠(yuǎn)。

6. D 上下文的意思要求選 path（路徑）。 line（線路）lane（車道）和 track（車轍），意思雖與 path接近，顯然講不通。

7. C 本句的前半句說(shuō)的是電腦選定了路徑，接下來(lái)自然是“……給‘手’發(fā)出指令（ instructions），‘手’就做出相應(yīng)的動(dòng)作”。所以 C是答案。 space，locations，time的詞義與上下文的意思銜接不上。

8. A 通段講的是虛擬駕駛員的反應(yīng)速度，所以只能選 quickly。

9. C bring是“帶來(lái)”， take是“帶走，接受（命令）”， send是“發(fā)送（命令）”， carry是“攜帶”。從上下文判斷，應(yīng)該是“… sending images continuously to the ‘brain’”。

10. B前一句說(shuō)的是微型攝像機(jī)將圖像送入電腦，接下來(lái)的意思應(yīng)該是電腦處理圖像，完成處理圖像所需的時(shí)間為 100毫秒。根據(jù)上下文表達(dá)的意思，應(yīng)該選 B。

11. A 本句的起始詞是 However，表示本句的意思與上一句的意思形成對(duì)比。上一句說(shuō)電腦完成圖像處理只需 100毫秒，第二句說(shuō)，昀好的駕駛員處理的時(shí)間要長(zhǎng)得多，應(yīng)該是 at least need one second。

12. C上一句說(shuō)，昀好的駕駛員至少需要 1秒的時(shí)間才能完成圖像處理。本句進(jìn)一步說(shuō)，他做出動(dòng)作還需 1秒的時(shí)間，這兩句的意思是層層深入，所以要選 Besides。

13. D 根據(jù)上下文判斷 ,“accident + ？”要表達(dá)的應(yīng)該是“事故率”。 Rate是“比率”，所以，答案是 D。count（計(jì)數(shù)）， amount（數(shù)量）、 digit(0到 9中任何一個(gè)阿拉伯?dāng)?shù)字 )都不對(duì)。

14. C “can we let him have the wheel at any time and in any place?”涉及交通安全、人命關(guān)天的問(wèn)題，能就是能，不能就是不能：什么“邀請(qǐng)（ invite）”、“建議（ suggest）、“檢查（ check）”。都談不上。所以，答案只能是 warn（警告）。

15. D 本句是給出目前不能 let smart car have the wheel at any time and in any place的原因。原因是它的能力 limited (有限)。對(duì) smart car的能力一無(wú)所知（ unknown）或是沒(méi)有測(cè)試過(guò)（ untested），顯然與前文的意思不符。few只能與可數(shù)名詞搭配， ability在本句中是不可數(shù)名詞，所以， few也不是答案。

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