【推荐1】

“Hello, everyone! Welcome to Tiangong Class.” A special lecture (讲座) began on Tiangong space station about 400 kilometers above Earth on Dec. 9, 2021. Lasting for about an hour, the space lecture was given to millions of students. Three astronauts (宇航员), Zhai Zhigang, Wang Yaping and Ye Guangfu showed how they live and work on the space station and did some interesting experiments (实验). This space lecture was quite different from the one 8 years ago. The “classroom” was bigger. It was China’s first extraterrestrial (地球外的) lecture series.

Plants in space —The lab (实验室) of the space station has many conditions that the Earth lab does not have, such as the weightless environment. ① The important jobs for astronauts included cell observation (细胞观察) and “feeding” plant life. In the lecture, Ye showed students experiments about cell growth in a weightless environment.

Use it or lose it —The human body grows with the pull of Earth’s gravity (重力). But in space, our bones and muscles (肌肉) don’t need to support our body’s weight. ② This will cause bone and muscle loss. Astronauts can lose up to 20 percent of their muscles after a couple of weeks. That is dangerous for astronauts because they will be too weak to work.

③ . Zhai introduced a special uniform called “penguin suit”. Wearing it, astronauts can keep their muscles strong. Wang also showed students how she walked on a machine, and rode a bicycle. Astronauts exercise like that every day to prevent muscle loss.

Young voices —Students were really interested in the lecture. ④ A 13-year-old boy from Tianjin said, “The most exciting thing I learned is that astronauts ‘fly’ all the time because there is no gravity (重力).”

Look! It was an eye-opening experience that would light up students’ interest in science, wasn’t it?

1. From the passage, we learn that ________.

A．the 2021 space lecture was the same as the one 8 years ago

B．three Chinese astronauts gave the lecture in a classroom on Earth

C．astronauts needn’t exercise every day on Tiangong space station

D．Ye showed the students how cells grow in a weightless environment

2. It’s better to put “Astronauts have different ways to prevent this.” in ________.

A．①

B．②

C．③

D．④

3. What’s the writer’s purpose (目的) of writing this article?

A．To explain the importance of studying plants in space.

B．To introduce three Chinese astronauts.

C．To make knowledge popular among readers.

D．To light up students’ interest in science.

【推荐2】Have you ever bought Genki Forest sparkling water because it’s advertised as “sugar-free”? The company recently apologized for a misleading advertisement.

The company said the drinks are “sucrose-free” (零蔗糖), but this is not the same as “sugar-free”. Now the company has changed the words “sugar-free” to “low-sugar” on the bottles.

In fact, there are many kinds of sugar. Sucrose is just one of them. Other kinds of sugar, such as fructose and sugar alcohol, are still in Genki Forest drinks. These types of sugar are used as sweeteners (甜味剂). They offer little energy, but a small amount of them can make drinks taste sweet. That’s why diet drinks like Genki Forest are popular among people who want to lose weight. They believe that they can not only enjoy sweet drinks, but also avoid taking in too much sugar. However, studies find that the sweeteners might make people eat more. When you eat sweet-tasting things, sweeteners send up your brain a “sweet signal”. Then your brain tells your body to prepare itself to take in energy. But since the diet soft drink has little energy, the brain will not receive what it is expecting. At this time, you will feel hungry and start getting energy by eating more food.

According to China Daily, drinking too many diet drinks might make you fat and lead to type 2 diabetes. It’s time for you to think twice about the diet drink trend.

1. Why did Genki Forest recently apologize?

A．For not having any sugar in its drinks.

B．For making too many advertisements.

C．For advertising its drinks incorrectly.

D．For incorrectly spelling words in its packaging.

2. What do we know about Genki Forest from Paragraph 3?

A．There are sweeteners in its drinks.

B．Its drinks have high levels of sucrose.

C．Its drinks taste sweeter than other drinks.

D．People can lose weight by drinking its drinks.

3. What does the underlined word “itself” in Paragraph 4 refer to?

A．your brain

B．your body

C．sweetener

D．fructose

4. What do studies show about sweeteners?

A．They are used more in food than drinks.

B．They might make people feel hungry.

C．They provide enough energy for those on a diet.

D．They cause the brain to stop receiving signals.

5. According to the last paragraph, drinking lots of diet drinks can be ________.

A．harmful

B．strange

C．enjoyable

D．fashionable

【推荐1】

Recently, have you ever noticed the differently—colored dustbins in the street?

It’s important to know how to sort your waste. Not knowing how to sort waste can make it harder to save energy and protect the environment.

If you don’t sort your rubbish, all of it will go to a landfill(垃圾填埋坑). These landfills can take up large areas of ground. You know, the large areas can be used for planting trees or crops. The electronic waste you throw away, such as batteries(电池), can pollute the soil and underground water. Other pieces of rubbish, like the metal part of a pen, can be used to make other things if they’re properly recycled. Many cities in China have had waste-sorting events in recent years. For example, Shanghai decided in 2018 that during three years(2018-2020), all the people living in Shanghai should sort their rubbish into four groups: wet, recyclable, harmful and dry.

◆Wet waste is also known as family waste. They’re things you don’t want but pigs can eat.

◆Paper, metal, glass and other things are recyclable waste.

◆Harmful waste includes things like medicines, batteries and paint.

◆Finally, any waste that’s not wet, recyclable or harmful will go in the dry waste dustbin.

Many other Chinese cities, including Shenzhen, plan to use this method to sort their rubbish. Now you can try to protect the environment and encourage others to sort their rubbish.

根据短文内容，判断句子正(T)误(F)。
1. Knowing how to sort waste can make it harder to save energy.
2. The electronic waste can pollute the environment.
3. All rubbish can be reused if they’re properly sorted.
4. The medicines you throw away belong to harmful rubbish.
5. Many cities are doing waste-sorting work nowadays.

【推荐3】When Shanghai introduced (推行) a new garbage-sorting policy (垃圾分类政策) in July, 2019, people in the city spent some time learning about it. They said that every time they took out their garbage, the workers standing by the bin (垃圾箱) would ask, “What kind of garbage are you?” On May 1, 2020, Beijing also introduced a garbage-sorting policy. People should sort their garbage into four groups: kitchen, recyclable (循环的), harmful (有害的) and other waste. These groups are represented (代表) by four different colors of trash bins—green, blue, red and grey. Those who don’t succeed in sorting their trash correctly may be fined up to 200 yuan.

Some cities like Shanghai and Qingdao sort their trash differently. These cities use four different groups: wet waste, recyclable waste, harmful waste and dry waste. Although their names are different, the groups are actually the same. In fact, wet garbage in Shanghai is kitchen garbage in Beijing. And dry garbage is the same as other waste.

To help people sort their trash correctly, the Beijing government gave online guidelines (指导方针). If people don’t know how to sort garbage, they can look for it on the WeChat account (微信用户). By typing (敲打) a key word or taking a photo, people can find out which group their waste should be in at once.

根据文章内容、给下列的问题选择最佳选项，并将其字母标号在答题卡上涂黑。
1. What colors are the four groups of trash bins?

A．Green, blue, red and grey.

B．Blue, orange, brown and red.

C．Green, black, red and grey.

2. What does the underline word “fined” mean in Chinese?

A．奖励

B．处理

C．罚款

3. Which of the following cities have the same names of garbage groups according to the passage?

A．Beijing and Shanghai.

B．Shanghai and Qingdao.

C．Beijing and Qingdao.

4. Kitchen garbage in Beijing is the same as ________ in Shanghai

A．recyclable garbage

B．dry garbage

C．wet garbage

5. What do we know from this passage?

A．The Wechat account can help people in Beijing with the garbage sorting.

B．Beijing uses four different groups: kitchen, recyclable, harmful and dry waste.

C．If people don’t know how to sort their garbage, they can’t get any help on the Internet.