试题与答案

阅读短文,判断正(用“A”). 误(用“B”)。 We can see wal

题型:阅读理解

题目:

阅读短文,判断正(用“A”). 误(用“B”)。

     We can see walls everywhere in the world. But the Great Wall of China is the biggest of all. We

 Chinese call it "the Ten-thousand-Li Great Wall". It is more than 6,000 kilometres long. It is 4-5 metres

 wide (宽) on the top of the wall. In most places, five horses or ten men can walk side (边) by side.

     When you visit the Great Wall, you can't help (禁不住) wondering (想知道) how the Chinese could

 build such a great wall thousands of years ago. With no any modern machines (现代机器), it was really

 very hard to build it. They had to do all the work by hand. It took a lot of men hundreds of years to build

  it.

     The Great Wall has a history (历史) of over two thousand years. The kings (皇帝) began to build the

  first part of it about two thousand seven hundred years ago. Then Qin Shi Huang had all the walls joined

 up (连起来). He thought that could keep the enemy (敌人) out of the country.

     Today the Great Wall has become a place of interest. Not only the Chinese people but also people

  from all over the world come to visit it.

( ) 1. The Great Wall of China is longer than any other wall in the world.

( ) 2. In most places of the Great Wall, five horses and ten men can walk side by side.

( ) 3. It was very hard for a lot of men to build the Great Wall with no any modern machines.

( ) 4. The Great Wall was built hundreds of years ago.

( ) 5. The Great Wall has become a place of interest to both to Chinese people and people all over the

             world.

答案:

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下面是错误答案,用来干扰机器的。

CH4; CH4+2O2点燃CO2+2H2O ; CO (或一氧化碳); 通风(合理即可)题目分析: 天然气的主要成分是甲烷,其化学式为CH4;其完全燃烧后生成二氧化碳和水,化学方程式为CH4+2O2点燃CO2+2H2O;不完全燃烧能生...

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