2 . 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。

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).     5     food on Mars will be different from our 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 the classroom     8     the school spaceships. And people won’t work in factories or companies.     9    (them) can stay at home,     10    (work) with computers.

3 . 阅读下面材料, 在空白处填入1个适当的单词或括号内单词的正确形式.

How will our continuously growing population affect our way of life, our environment, even our planet? No matter how you look at it, we will face     1     extremely serious problem. By the middle of the 21st century, we will have used up all the oil that     2     (drive)our cars if at the rate we’re going. Even if scientists develop some new     3     (way)of feeding the human race, the crowded conditions on the earth will make     4     necessary for us to look for open space somewhere else. But none of the planets in our solar system are able     5     (support)life at present. One possible solution     6     the problem, however, has recently been raised by an American scientist, Professor Carl Sagan. His idea is     7     before the earth’s resource are almost exhausted, it will be     8     (total)possible to change the atmosphere of Venus(金星) and so create a new world almost as large as earth itself.

However,     9     his idea is turned into reality, humans have a long way to go. On the one hand, Venus is much     10     (hot)than the earth; on the other hand, there is only a tiny amount of water there.

4 . 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。

Have you ever imagined     1    (live) in 2200, about 200 years from now? A recent study describes robots, underwater cities and holidays in space. City planners, experts on space and architects    2     (ask) to give their ideas of life in 2200. According to them, the way people live, work and play will be totally different     3     how we do these things today. They also said that over twenty years ago, people couldn't imagine how the Internet     4     the smartphones would change our lives. But today, both have changed the way we communicate, learn and do daily things, and the changes in the next century will probably be even     5    (great).

Those     6    (question) in the research said that people might not go to the office in the future but would work at home instead. People will have advanced 3-D printers that will enable    7     to download a design for furniture or a food picture and then to "print" the sofa, table or pizza at home.    8     will also be less need for visits to the doctor. People will have a home health capsule that will "diagnose"    9    the problem is and provide various treatment.     10    (hopeful), they will also be going into space for holidays to get resources that have been used up on earth.

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.

7 . 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.

8 . 阅读下面短文,按照句子结构的语法性和上下文连贯的要求,霍空格处填入一个适当的词或使用括号中词语的正确形式填空。

Robots have been widely used in our daily life. They can be     1     (see) in many factories today and have gone to such far places as     2     moon. Some robots can” see"     3    ( clear). For they use TV cameras as their     4     (eye), Many robots have computer brains, Now they have even come into       5       (we) homes and work as       6     (help) at home , Not only can they do simple jobs for us ,such as     7       (put) things into boxes , but also they can look    8     babies Unlike human beings       9     needy sleep, robots can work 24 hours a day. In the future, with the aid of robots, our life will become much     10     (easy) than before.