The CR450 is a new high-speed train that can go very fast! The train can reach a test speed of 450 kilometers per hour and will run at 400 kilometers per hour with passengers. H____1____ amazing it is! This means it will be the ____2____ (fast) high-speed train in the world!

The China State Railway Group, which made the train, says the CR450 is excellent in many ____3____ (area). It goes fast, stops quickly, uses less energy, and ____4____ (make) little noise.

First, even t____5____ the CR450 goes super fast, it is still very safe and comfortable. Second, the train’s weight is cut by 10%. So its lighter body helps the train save energy. ____6____ (three), the inside of the train is quiet, just like the slower trains, providing a peaceful travel experience. At last, the train offers passengers more space t____7____ other trains. And there are also special places for luggage, bikes and even wheelchairs, so everyone has enough room for ____8____ (they) things.

The CR450 is coming at full speed with a bright future, which is really ____9____ (meaning) in the history of China’s railway development. We are looking forward to ____10____ (travel) in the train as quickly as possible.

1.1.

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解析：选How。- 题型：感叹句 - 解析：How + 形容词 + 主语 + 谓语！amazing 是形容词，用 How 引导感叹句。句意：它多么了不起啊！

2.2.

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解析：选fastest。- 题型：形容词最高级 - 解析：in the world（在世界范围内）表示范围，要用最高级，fast 的最高级 fastest。

3.3.

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解析：选areas。- 题型：名词复数 - 解析：many（许多）后接可数名词复数，area→areas。in many areas 在很多方面。

4.4.

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解析：选makes。- 题型：一般现在时，主谓一致 - 解析：主语 it，并列谓语：goes, stops, uses, makes，动词用三单形式 makes。

5.5.

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解析：选though。- 题型：固定连词搭配 - 解析：even though 尽管，引导让步状语从句。句意：尽管 CR450 速度超快。

6.6.

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解析：选Third。- 题型：序数词 - 解析：前面 First, Second，后面 At last，此处是第三点，用 Third（首字母大写）。

7.7.

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解析：选than。解析：前面 more space（更多空间）是比较级，用 than，表示 “比其他列车”。

8.8.

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解析：选their。解析：修饰名词 things，they 变为 their，their things 他们的东西。

9.9.

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解析：选meaningful。解析：be 动词后用形容词，meaning（名词）→meaningful（有意义的）

10.10.

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解析：选travelling / traveling。解析：固定搭配 look forward to doing sth. 期待做某事，to 是介词，后面动词用 - ing 形式。