【正确答案】 C

【答案解析】[听力原文]
Thank you for coming, everyone. Today"s presentation will show how we see the development of the motor car in the short to medium term, and that is why we have invited all of you here today.
Let"s start with power. It"s clear that petrol-driven engines have no future. Already there are many alternative fuel vehicles on the market, powered by anything from solar power to natural gas. Some independent thinkers have even produced cars that run on vegetable oil. But as we all know, of all these alternative fuel vehicles, the most practical are electric vehicles. Sure, in the past electric vehicles had their problems, namely, a limited driving range, and very few recharging points, which limited their use. Now, however, recent developments in electric vehicle technology mean they can match conventional petrol engines in terms of performance and safety. Let"s not forget that electric vehicles are cleaner. Plus, importantly, the power source is rechargeable, so this does not involve using any valuable resources.
Moving on to communications, very soon, cars will be linked to GPS satellites, so they"ll do all the driving for you. What controls remain for the users will be audio-based, so, for example, you"ll just have to say "a bit warmer", and the air conditioning will adjust automatically. You"ll also be able to receive email, music and movies, all via an Internet link. So just type in the destination you want, sit back, sleep, watch a movie, whatever.

What is the presentation mainly about?

[解析] 本文主要针对汽车的发展趋势展开演讲。
短文开头交代了演讲的主题：如何看待汽车中、短期的发展，即汽车的发展趋势，故答案为C。

【正确答案】 A

【答案解析】[听力原文]
What used to restrict the use of electric vehicles?

[解析] 短文中提到，过去电动汽车存在问题，比如，行驶范围有限，充电点不足，这限制了它们的使用，A为限制电动汽车使用的因素之一，故为答案。

【正确答案】 D

【答案解析】[听力原文]
What does the speaker say about electric vehicles of today?

[解析] 短文中先介绍了电动汽车过去存在的问题，接着指出，现在，电动汽车技术的发展使得它们在性能和安全方面可以和传统的汽油驱动汽车相媲美，故答案为D。