2 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

5G is developing, but most of us aren't really sure what it is or the reason     1     we need it. A big part of the reason is that 5G means more than one thing. If you ask different people, you     2    (provide) with different answers.

Experts believe that 4G is on     3     way out. In 2020, the U.K. is expected to use 5G. At present, it is unknown exactly what influence 5G will have on people's life but it is widely thought that 5G will     4     (definite) be faster than any generation of networks we have used previously.

Work will likely become much easier as 5G will allow quicker downloads and a better ability to work online even if there is no wi-fi connection. With the     5     (develop) of 5G, driverless cars will be able to communicate     6     other vehicles, which can reduce road accidents by about 10%, One of the most     7     (impress) things will be that people can see which seats on a train are accessible to     8     (they) when it arrives at the station.     9     (get) around the world will also be more convenient.

A number of     10     (company) are now working on bringing 5G to the market. It remains to be seen how much of the country 5G will cover and whether everyone will be able to benefit from it.

3 . 阅读下面短文，在空白处填入 1 个适当的单词或括号内单词的正确形式。

The Future Life on Mars

Compared with the life we    1    (live) on the earth now, the future life on Mars will be     2    (total) different.

Firstly, without pollution on Mars, people will be able to drink cleaner water    3     breathe fresher air, so they will be    4    (health).The food on Mars will be different from     5    food now. People will just take    6    (pill) and drink man-made juice instead of eating bread and meat. Secondly, people will travel back to the earth or to other planets for sightseeing by spaceship. Additionally, there will be no    7    (fix) school and classrooms. Children will just fly to    8    classroom    9     the school spaceships. And people won’t work in factories or companies. They can stay at home,    10    ( work) with computers.

5 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

All new cars sold in Europe from 2022 will have technology to limit their speed. New safety rules from the European Union will require new cars    1    (have) “intelligent speed assistance” systems, like seatbelts and airbags.

There are other    2    (thing)that cars will be fitted with. All cars will have breathalyzers（呼气酒精测量仪）with    3    drivers won't be allowed to drive if they have drunk too much alcohol. Cars must also have an advanced emergency braking system,    4    built-in data recorder, a tiredness and distraction monitor, and sensors to help when reversing. The EU says 25,000 people    5    (kill)each year on Europe's roads. Most accidents are caused by human error. The new safety systems will reduce road deaths.

There has been a mixed reaction    6    the new safety features. Some people agree with them, while others disagree. The EU said the features    7    (make)driving a lot safer. It added that the new safety features could save up to 10,500 lives and avoid up to 60,000    8    (extreme)serious injuries by the year 2030.Many drivers are unhappy with the technology. They say it could make roads more    9    (danger)because driving requires human judgment. A driver said he didn't want data recorders in    10    (he)car because that was like Big Brother was watching him.

6 . 阅读下面短文，在空白处填入1个恰当的单词或括号内单词的正确形式。

The 2020 Nobel Prize in Chemistry     1    (award)to Emmanuelle Charpentier and Jennifer A. Doudna recently. The two female scientists won the prize     2     the development of a method of genome (基因组) editing.

Gene editing has a wide     3    (apply) across the world. It can     4     (direct) change the DNA of a lifeform and has the potential of leading to     5    (benefit) results.

One of the most convenient methods of gene editing is called CRISPR/Cas9,     6     was discovered by the two Nobel winners. The method enables scientists to cut a sequence of DNA into two pieces,     7    (allow) nature to “repair” it. During the repair process, errors will be introduced to create a different sequence of DNA, thus resulting in an     8    (edit) gene.

In simple words, CRISPR/Cas9 is the “scissors” of genes. The greatness of CRISPR/Cas9 lies in extreme accuracy. It also enables humans to breed (孕有) more plant varieties and develop better treatment of cancer.

In the future, the discovery     9    (expect) to have a revolutionary impact on the life science and make the dream of curing some diseases come true.

There will be no traditional Nobel Awarding Ceremony in Stockholm this year due to the COVID-19,     10     an online version will be held instead.

8 . 阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式填空。

The Future Life on Mars

Compared with the life we    1    (live) on the earth now, the future life on Mars will be     2    (total) different.

Firstly, without pollution on Mars, people will be able to drink cleaner water    3     breathe fresher air, so they will be    4    (health).The food on Mars will be different from     5     food now. People will just take    6    (pill) and drink man-made juice instead of eating bread and meat. Secondly, people will travel back to the earth or to other planets for sightseeing     7     spaceship. Additionally, there will be no    8    (fix) school and classrooms. Children will just fly to    9    classroom in the school spaceships. And people won’t work in factories or companies. They can stay at home,     10    ( work) with computers.

9 . 阅读下面短文，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

There is no doubt that humankind dreams of making Mars our second home. However, sending people there will require all the skills, courage and     1     (intelligent) of the human race. While the Moon can be reached within days, it would take months to reach Mars,     2     (travel) through dangerous solar radiation. And even if the first settlers do reach Mars safely, staying alive will be     3    daily challenge, but as proved by the Biosphere experiment, not impossible.

As early as the 1980s, scientists were building Biosphere 2 in the Arizona desert. It consisted of a closed space    4     people, animals and plants could live together. The “closed” concept meant that the space was designed     5     (function) with its own oxygen, food and water, needing nothing from the outside world.     6     the two-year experiment was not a success, it did provide us with a better understanding of how humans might be able to live on another planet. More recently, scientists     7     (succeed) in growing a variety of plants in an environment similar to that on Mars. That     8     (definite) is a big step forward.

For now, human settlement of Mars is still     9     (decade) away. In the meantime, scientific research shows that the planet Earth is getting     10     (warm). This change is having a terrible effect on the biosphere.