请阅读下面语篇，从每小题所给的A、B、C三个选项中，选出一个最佳选项。

Technology is the first power!

It is a great joy and a matter of pride to see China’s high technology is brightly shining from the sky to the ground.

It is widely known that China has well-developed high-speed railway network（铁路网）in the world. Now, the country is breaking its own speed record with the CR450. The CR450 can travel at a top speed of 453 kilometers an hour. Once put into use, it will take just about 2.5 hours to travel from Beijing to Shanghai, which takes at least 4.5 hours at the moment. Even though it can travel so fast, it can also start braking（刹车）quickly, taking just 1.7 seconds, and its noise level keeps low. It creates a safe and comfortable environment for passengers. With the advantages, the CR450 shows China’s leading role and great power to the world.

The AG60E is China’s self-developed lightweight two-seat electric plane. It is 6.9 meters long, 2.6 meters high and 8.6 meters wide. It is mainly designed for pilot training, flight experience, and private travel. It uses an electric power system. Compared with the traditional plane, it doesn’t send out greenhouse gases, and its noise level is much lower. The AG60E electric plane draws the world’s attention, for it is a practice of China’s aviation industry（航空工业）towards air pollution. The AG60E is only a starting point. It is expected to become an important force to achieve green and low-carbon development in the field of aviation.

（1）How long will it take to travel from Beijing to Shanghai by CR450?

A．

1.7 hours.

B．

About 2.5 hours.

C．

At least 4.5 hours.

（2）What is the advantage of the CR450?

A．

Fast and safe.

B．

Light and small.

C．

Warm and bright.

（3）Why does the world pay attention to the AG60E?

A．	It is self-developed by China.
B．	It can be used in many fields.
C．	It’s environmentally friendly.

（4）What do the CR450 and the AG60E have in common?

A．	Their noise level is low.
B．	They have been widely used.
C．	They can hold many passengers.

（5）What does the poster want to show us?

A．	Chinese people’s wish for green travel.
B．	The ways to cut down pollution in China.
C．	Great achievements of China’s technology.