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2021年12月六级第一套答案 (2021年1月lpr利率是多少)

长沙洗浴 04-19 阅读：34 评论：0

一、阅读理解（40分）

Passage 1
根据以下内容，回答问题：

The history of the bicycleThe bicycle is one of the most important inventions in human history. It has revolutionized the way we travel, work, and play. The first bicycles were invented in the early 19th century, and they have undergone many changes since then.The first bicycles were made of wood and iron, and they had no brakes. They were very difficult to ride, and they were only used by a few people.In the late 19th century, the invention of the safety bicycle made cycling much easier and safer. The safety bicycle had two wheels of the same size, and it was equipped with brakes and gears. This made it possible for people of all ages and abilities to ride a bicycle.The bicycle quickly became a popular mode of transportation, and it was used for both commuting and recreation. In the early 20th century, the bicycle was used by many people to get to work or school. It was also used for racing and other forms of recreation.Today, the bicycle is still a popular mode of transportation and recreation. It is used by people all over the world for a variety of purposes. The bicycle is a sustainable and affordable way to get around, and it is also a great way to stay active and healthy.
1. When were the first bicycles invented?
2. What was the main difference between the first bicycles and the safety bicycle?
3. Why did the bicycle become a popular mode of transportation?
Passage 2
根据以下内容，回答问题：

The importance of sleepSleep is one of the most important things we can do for our health. It allows our bodies to rest and repair themselves, and it also helps us to think clearly and make good decisions.When we sleep, our bodies go through a series of stages. These stages include light sleep, deep sleep, and REM sleep. Light sleep is the stage where we are most easily awakened. Deep sleep is the stage where our bodies are most at rest. REM sleep is the stage where we dream.Each stage of sleep is important for our health. Light sleep helps us to prepare for deep sleep. Deep sleep helps us to restore our bodies and minds. REM sleep helps us to process our emotions and memories.If we do not get enough sleep, it can have a negative impact on our health. We may feel tired, irritable, and have difficulty concentrating. We may also be more likely to get sick.There are a number of things we can do to improve our sleep. These include:Going to bed and waking up at the same time each day, even on weekends.Creating a dark, quiet, and cool sleep environment.Avoiding caffeine and alcohol before bed.Getting regular exercise.Seeing a doctor if you have trouble sleeping.
1. What are the three main stages of sleep?
2. Why is it important to get enough sleep?
3. What are some things we can do to improve our sleep?

二、完形填空（15分）

请根据上下文，从四个选项中选择一个最合适的词来完成短文。

The internet has become an ___ (1) part of our lives. We use it to connect with friends and family, to get ___ (2), and to shop. However, it is ___ (3) to be aware of the risks associated with using the internet.One of the biggest risks is ___ (4). Cybercriminals can use the internet to steal ___ (5), credit card numbers, and other personal information. They can also use the internet to ___ (6) malware onto your computer. Malware is software thatcan ___ (7) your computer and steal your information.It is ___ (8) to take steps to protect yourself from these risks. You should use strong passwords and never share them with anyone. You should also be ___ (9) when clicking on links in emails or on websites. You should only shop on websites that you ___ (10).By following these simple tips, you can help to ___ (11) yourself from the risks associated with using the internet.