1 . How to prepare for a thrilling hike? Hiking needs mental and physical preparation weeks before the material day. If you’re a fan of hiking mountains. Here is a guide to help you.

Train hard and train in time

You need to train your body at least three months before the challenge.     1     You can start with baby steps and gradually take more demanding exercises and distance. You can often carry your hiking stick to promote stability. Keep track of your progress to help you achieve your goal.

Choose your clothes carefully

    2     . Wear light absorbent pants to reduce friction and promote absorption of sweat. Long pants keep you safe from stinging weeds, insects and tough weather.

    3    

You must consider various factors before purchasing the most appropriate hiking shoes. First, mind the terrain (地形) of the hiking ground. A mild terrain will do fine with light shoes. On the other hand. A tough, hard and mountainous terrain require hardy hots to help navigate the rocky grounds.

Adequately pack your bag

Your bag is your lifeline when hiking. Water is the most essential itch when hiking. The body performs best when you hydrate frequently throughout the challenge. Carry adequate clean water and sip often.     4     These are primary tools to help you find your way, water points, emergency towers, and other places. Hope for the lest but always prepare for ever-agencies. Thus, ensure you have a flash light, a lighter and a whistle.

Hiking is a refreshing way of keeping fit, having fun and building resilience.     5    

A．Choose appropriate footwear

B．Search for the route you will he hiking

C．Carry a compass, a map and a gas with you

D．Adequate water can help you be in good con lit ion

E．create a regular schedule and be disciplined to follow it

F．Wear appropriate clothes that allow your free movement

G．Adequate planning will help have a fantastic experience of it

2 . Diplomacy (外交) is an art. It requires not only strategy, but also other aspects, including intuition, persuasion, and even tricks, human skills that have long been unreachable to even the most powerful artificial intelligence (AI) approaches. Now, an AI algorithm (算法) from a high-tech company has shown it can beat many humans in a game of diplomacy, which required both strategic planning and negotiations with other players. The work, researchers said, could point the way toward virtual exercise coaches and conflict mediators (调解员) .

AI has already beaten humans in some games of strategy. It is also proving powerful at natural-language processing, in which it can generate humanlike text and carry on conversations. In the game of diplomacy, seven players vied for control of Europe. On each turn, players issued orders regarding the movement of army and naval units, following discussion with other players, whom they could attack or support.

There are two technical innovations noted by Jonathan Gratch, a computer scientist at the University of Southern California who studies negotiation agents. First, the Al agent’s com-munication is grounded in multistep planning. Second. the Al agent keeps its remarks and game play within the range of human common practice.

To test its skill, the researchers had the Al agent play 40 online games against humans. It placed in the top 10% of players who’d played at least two games. “In a game that involves language and negotiation, that agents can reach human equal level is very exciting,” said Yu, a computer scientist at Columbia University.

According to Brown, a computer scientist at the company who co-authored the paper, the work could lead to practical applications in fields that now require a human touch. One specific example is that virtual personal assistants might help consumers negotiate for better prices on plane tickets. Gratch and Yu both see opportunities for agents that persuade people to make healthy choices or open up during therapy.

1. Who is likely to benefit from the research work?

A．A famous cyber athlete.	B．A professor of civil law.
C．A professional accountant.	D．A virtual fitness instructor.

2. What does the underlined word “vied” mean in paragraph 2?

A．Accounted.

B．Apologized.

C．Searched.

D．Competed.

3. Why does the author mention AI agent?

A．To understand the thought of AI.	B．To illustrate the advantages of AI.
C．To describe the importance of AI.	D．To introduce the strategy of AI.

4. What is the best title for the text?

A．Diplomacy, a Popular Game	B．AI Learns the Art of Diplomacy
C．Al Will Become a Perfect Diplomat	D．An Excellent Game Player