题目内容：

Greener cars for a greener future

Can you imagine the day when you will no longer need to stop for fuel at petrol(汽油)stations? Or how about flying to work in your own car? Do you think this is science fiction? (科幻)Let’s see what Dr. Stephen Green, director of Cars of the Future International, has to say.

1.__________

Well, our job is to design and test cars that won’t pollute the environment. Scientists from all over the world for the company(公司).

2.___________

These cars don’t run on petrol. Instead ,they use alternative sources of energy (可替代性能源),such as solar power ,electricity ,natural gas or even water.

But will these cars really help to reduce air pollution?

Yes, I believe they will. There will be almost no car exhaust fumes(废气)，or there won’t be any fumes at all! People will also save a lot of money on petrol.

3._________

They will, of course, be expensive in the beginning. However; we’re going to find large companies to produce them at a lower cost.

4._________

Right now, we’re testing a new solar car. We’re going to present our results at a conference

（大会)in Tokyo next month.

5._________

We are soon going to start work on a flying vehicle. Can you imagine that? No more traffic jams(交通事故)!

根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使短文意思通顺、内容完整，并将其标号填写在下面题号后的横线上。

A. What does your company do?

B. Will these cars be cheaper than the ones we have now?

C. Do you have any other plans for the future?

D. Why are your cars friendlier to the environment?

E. Are you working on any special type of car at the moment?