三、阅读理解
China has just made a new high - speed train called CR450. It can go as fast as 453 km/h in tests, and it will run at 400 km/h in real use. It may be the fastest high - speed train in the world.
The CR450 is made by China State Railway Group. It works very well in many ways. It runs fast, saves energy, makes little noise and stops well. Even though it runs faster, its braking (刹车) system is just as good as the one on a train that goes 350 km/h. This is because of its great engineering, which keeps the train safe and steady.
One big development of the CR450 is that it uses less energy. The train is 10% lighter and meets 22% less resistance (阻力) when moving. These two things help save a lot of energy. The CR450 also makes your trip more comfortable. With advanced technology, the noise inside the train is lower—it is as quiet as that inside the slower trains. The inside of the train is redesigned to give 4% more space. There are luggage racks (行李架) that you can adjust, and special places to put bikes, wheelchairs and other items. This makes travelling easier for passengers.
(
A. 350 km/h.
B. 400 km/h.
C. 450 km/h.
D. 453 km/h.
(
A. increasing its weight
B. reducing resistance and weight
C. using more energy
D. designing more luggage space
(
A. has more large seats
B. adds special windows
C. has lower noise and larger space
D. makes trips safer
China has just made a new high - speed train called CR450. It can go as fast as 453 km/h in tests, and it will run at 400 km/h in real use. It may be the fastest high - speed train in the world.
The CR450 is made by China State Railway Group. It works very well in many ways. It runs fast, saves energy, makes little noise and stops well. Even though it runs faster, its braking (刹车) system is just as good as the one on a train that goes 350 km/h. This is because of its great engineering, which keeps the train safe and steady.
One big development of the CR450 is that it uses less energy. The train is 10% lighter and meets 22% less resistance (阻力) when moving. These two things help save a lot of energy. The CR450 also makes your trip more comfortable. With advanced technology, the noise inside the train is lower—it is as quiet as that inside the slower trains. The inside of the train is redesigned to give 4% more space. There are luggage racks (行李架) that you can adjust, and special places to put bikes, wheelchairs and other items. This makes travelling easier for passengers.
(
B
) 1. What is the running speed of the CR450 in real use?A. 350 km/h.
B. 400 km/h.
C. 450 km/h.
D. 453 km/h.
(
B
) 2. The CR450 improves its energy efficiency (效率) by B
.A. increasing its weight
B. reducing resistance and weight
C. using more energy
D. designing more luggage space
(
C
) 3. The CR450 is considered more comfortable because the inside C
.A. has more large seats
B. adds special windows
C. has lower noise and larger space
D. makes trips safer
答案：1. B 2. B 3. C
解析：
文章翻译
中国刚刚制造了一种名为CR450的新型高速列车。在测试中，它的速度可达453公里/小时，在实际使用中，它的速度将达到400公里/小时。它可能是世界上最快的高速列车。
CR450由中国国家铁路集团制造。它在很多方面都很有效。它运行速度快，节能，噪音小，停车性能好。尽管它跑得更快，但它的制动系统和时速350公里的火车一样好。这是因为它的伟大的工程，使火车安全稳定。
CR450的一大进步是能耗更低。列车的重量减轻了10%，行驶时遇到的阻力减少了22%。这两件事有助于节省很多能源。CR450也让你的旅行更舒适。有了先进的技术，火车里的噪音更低——它和慢速火车里一样安静。车厢内部经过重新设计，空间增加了4%。有可以调整的行李架，还有专门放自行车、轮椅和其他物品的地方。这使得乘客出行更加方便。