Could machines really develop human-like intelligence? And what would happen if they did? Would thinking machines work alongside humans or     1     the existence of humans? How would they be punished if they     2     crimes or even murdered humans? As we become more and more     3     on computers, some scientists are urging us to think about the dangers     4    by the advances in AI. Stephen Hawking, for example, warned, “The development of full artificial intelligence could     5    the end of the human race.

The first    1     of friendship is the peace that comes from sharing with friends our joy, sadness, success and failure. Here, friendship has a    2     advantage - happiness takes    3     a greater meaning and a trouble shared becomes a trouble halved!     4    , this kind of openness results    5     a close friendship. With true friends, we feel free to share our joy and sadness in full measure. We know that our friends will both respect our feeling and    6     these moments of closeness. Indeed, the human heart depends on such opportunities for comfort and protection.

Hunting and fishing have directly     1     the world’s animal populations. Some people hunt animals for     2    : whale meat is eaten in some parts of the world. Some people hunt animals for     3    : animal skin is used to make coats and bags. Still others hunt animals just for     4    : deer are tracked and shot by people who enjoy the     5     of the sport.

With the quick spread of COVID-19, more and more people around us are tested p    1    and people grow more and more     2    (焦虑). Here are some effective measures to p    3    you from being infected(感染)with the virus.

First, wear masks wherever you go, though it is not c    4    for you to perform daily routine. Second, m     5    distance from others. It is of extreme importance to avoid direct c    6    with those who have fever, cough or other COVID-19 symptoms(症状). Third, eat properly to ensure you have enough     7    (营养). If you have to eat outside, bringing food from home is     8    (推荐). Last but not least, we should a    9    importance to rest and exercise, which can help you     10    (恢复)sooner if you should fall ill.

Advertising has become part of modern life. In short, it refers to the activity of     1     a product of service. In other words, it tries to persuade people to buy a product or service. The history of     2     has always been closely linked with that of the mass media. As media channels have grown in number and type,     3     have advertisements. Because the mass media reaches so many people, it is a perfect vehicle for advertisers. In addition to    4     people aware of a product or service, a successful advertisement will also create a desire to buy, thus boosting business. Based on the psychology behind creating a desire to buy, advertisers have developed ways of persuading people into purchasing their products or services. A common technique to make an impact is to create a memorable    5    .

It is vital to remain lifelong learners in a rapidly changing world. As you progress through life, you may study and work in new environments.     1     , you will be exposed to many new ideas, beliefs, practices and learning experiences. Furthermore, the production of knowledge is     2     to grow rapidly. New knowledge is constantly being generated and what you already know is being revised all the time, to the     3     that it can be difficult to keep pace with the latest developments. Indeed, you may one day do jobs that do not yet exist, use technologies that are not yet developed and     4     problems that are not yet problems! This is not to suggest that there is no need for you to study in school but to acknowledge that     5     your knowledge through lifelong learning is both essential and beneficial.

At the basic level,     1    intelligence is a branch of computer science that aims to create intelligent machines. One of the     2    aims of AI is to develop computer intelligence capable of learning from experience, adjusting to new     3    and performing tasks like humans. To achieve this aim, many approaches to creating true AI have been put forward, including “deep learning”, which enables a machine to improve its own performance by learning from the results of its previous actions. Deep-learning AI has the capacity to     4    massive amounts of data through multiple layers, imitating the complex     5    of the human brain.