题目内容
12．Car companies are developing vehicles that will plug into electric sockets，just like many laptops，digital cameras，cell phones and Mp4do．Called"plug-in vehicles"，these cars will get most of their power from electricity．Their drivers won't have to stop at gas stations as often as usual．The technology is more than just cool．In our car-filled world，plug-in vehicles could reduce the amount of gas we use，which keeps rising in cost now and then．Besides，driving around in these vehicles may even help the environment．Gas-burning cars produce a lot of greenhouse gas，which causes globe warming．
The first company-produced plug-in vehicles could hit the roads by 2020．But engineers still have a lot of work to do to make the technology practical and inexpensive．
Batteries（电池） are the biggest challenge．In the plug-in-vehicle world，Li-ion（锂离子）batteries are getting the most attention．These batteries can store a large amount of energy in a small package，and they last a longer time between charges．Li-ion batteries can fit laptops，cell phones，heart instruments and other similar pocket ones．
But because cars are so big and heavy，it would still require a suitcase-sized Li-ion batteries to power about 12km of driving．What's more，the batteries are much expensive．
"A car filled with batteries could go a long distance，"says Ted Bohn，an electrical engineer in Chicago．"But it couldn't pull any people．and it would cost﹩100，000．"
So researchers need to work out how to make batteries smaller and cheaper，among other questions．
"The answers don't exist yet，"Bohn says，"As a kid，I thought someone someplace knows the answer to everything．All of these questions haven't been decided．That's what engineering is about-making a guess，running tests and getting fine results．"
20．The passage mainly talks aboutD of a new car
A．the developing
B．the speed
C．the appearance
D．the batteries．
21．Which is true according to the passage？B
A．The"plug-in vehicles"will use electricity completely as driving power．
B．The new technology will help protect our environment．
C．The technology of using electricity as driving is quite practical now．
D．The biggest challenge of the new technology is that it will cost us more energy．
22．How does Bohn feel about the future of the technology according to the last paragraph？A
A．Confident
B．Puzzled．
C．Worried．
D．Disappointed．
23．According to the passage，the new technology is facing the following problems except thatC．
A．the new technology cannot come into use at present
B．the cost of the new technology is quite high
C．the government won't support the technology
D． the size of the batteries is too big at present．
分析 文章讲述了一些汽车公司正在生产电油混合式汽车，更环保，但是也存在一些问题有待解决，比如电等．
解答 20-23 DBAC
20题答案是D．细节理解题．根据Batteries（电池） are the biggest challenge 电池是最大的挑战，以及后文介绍，可知文章主要讲述电池这个大问题．故选D．
21题答案是B．判断对错题．根据Besides，driving around in these vehicles may even help the environment．可知这类汽车有助于环保．故B正确．根据plug-in vehicles could reduce the amount of gas we use 这类汽车可以减少汽油的使用量，并不是完全不用汽油，故A错误．根据But engineers still have a lot of work to do to make the technology practical and inexpensive工程师还有许多工作要做，以便使得这项技术更可行和便宜，故C错误．根据Batteries（电池） are the biggest challenge最大的挑战是电池，故D错误．故选B．
22题答案是A．推理判断题．根据I thought someone someplace knows the answer to everything．All of these questions haven't been decided．That's what engineering is about-making a guess，running tests and getting fine results我觉得某个地方会有某个人知道答案，所以工程师正在作测试和不断取得好结果．可知Bohn 对这项技术非常有信心，故选A．
23题答案是C．归纳总结题．文章提到的这项技术目前面临的问题有：技术暂不可行，费用高，电池尺寸太大等，关于政府支持文章没有提到，故选C．
点评 本文是新闻报道类阅读理解．做这类题材阅读理解时要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据．
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