Ocean: Hope for the 21st Century, Information on Ocean: Hope for the 21st Century

Do you know? When astronauts in space look back at our Earth, they find that Earth is a beautiful blue "water ball" in the vast universe.

The blue ocean, the waves are rough and boundless. Since the dawn of human society, people have had a very close relationship with the ocean. The ocean has provided mankind with the convenience of spaceflight; It generously provides humans with an abundance of aquatic products and daily indispensable table salt.

However, when the ocean loses its temper, it can also ruthlessly overturn ships, break seawalls, destroy coastal towns, and bring terrible disasters to mankind.

For thousands of years, people have loved and revered the ocean. In the face of the moody ocean, people can only "look at the ocean and sigh".

Today, due to the rapid development of science and technology, mankind is ushering in a new era of developing and utilizing the ocean.

Due to the rapid growth of the world's population, coupled with the desertification of land and the deterioration of the ecological environment, mankind is facing the threat of food shortage. Scientists have long called for this: humans should ask for food from the oceans!

It can be expected that in the 21st century, more and more high-protein foods will come from the ocean.

The energy of the waves and tides used to be wasted, and it is no longer a dream to use the movement of the sea to generate electricity. The establishment of tidal power stations and seawater temperature difference power stations will bring endless and inexpensive electricity to mankind.

In addition, the use of seawater desalination to alleviate water shortages in many arid regions of the earth, and the construction of cities on the seabed to open up the living space of human beings will also turn from fantasy to reality.

However, in order for mankind to develop and utilize the oceans, it is first necessary to protect the oceans and cherish their resources. Only then will the ocean be happy to give.

This text mainly talks about the close connection between man and the sea, and the era of human development and use of the ocean, tells us that the ocean is the hope of the 21st century, calls on us to protect the ocean, cherish the marine resources, and stimulate our love for science and the desire to adopt the feelings of nature.

This article is an expository essay on the ocean and human life. With the development of science and technology, mankind is ushering in a new era of developing and utilizing the ocean, and the ocean will become the hope of mankind in the 21st century.

The article can be understood in three parts

The first part is the 1st and 3rd natural paragraphs, which mainly talk about the close relationship between human beings and the ocean, and people have loved life and revered the ocean for thousands of years.

The second part is the 4th and 8th natural paragraphs, which mainly talk about the new era of human beings ushering in the development and utilization of the ocean.

The third part is the ninth natural paragraph, which says that in order for human beings to develop and utilize the ocean, they must first protect the ocean.

The second part should be the focus of our reading, from which we will know where we can exploit and use the ocean for the benefit of mankind.

Expression hints.

Expository essays generally do not have flowery words and sentences, nor do they have a moving plot, and the language is plain and simple, so it will make some readers feel boring and boring, so how to overcome these shortcomings? Different authors will choose different methods depending on what is explained. What did the author of "The Ocean – Hope for the 21st Century" do?

Let's start with a few sentences from the text

1) The ocean provides human navigation convenience; It generously provides humans with an abundance of aquatic products and daily indispensable table salt. However, when the ocean throws a temper, it can also ruthlessly overturn ships and break ...... seawalls

2) In the face of the moody ocean, people can only"Looking at the ocean and sighing"。

3) Only then will the ocean be happy to make its offerings.

Smart you, have you discovered the characteristics of these sentences? If you notice the punctuated words, you will definitely feel that it is precisely because of the use of these words that the sentence becomes lively and vivid, and the original lifeless ocean suddenly comes alive, like people, there are joys, sorrows, and emotions, and there will be people's movements and expressions ......This is the feeling that the anthropomorphic sentences in the expository text bring us, so that we will not feel too boring and boring when reading the expository text, and at the same time have a more concrete and vivid understanding of the things explained by the author.

Different expressions bring different expression effects, if you encounter expository essay assignment training in learning, you should pay attention to using appropriate expression methods to make your essay vivid and lively!

A: The reason why the ocean is the hope of humanity in the 21st century is 1When humanity is facing an energy crisis, marine mineral resources can be exploited; 2.

When human food is scarce, they can ask for high-protein things from the ocean; 3.When there is a shortage of electricity for human beings, the movement of seawater can be used to generate electricity; 4.When there is a water shortage in human settlements, the method of desalination of seawater can be used to alleviate the water shortage in many arid areas on the earth; 5.

When the living space of human beings is narrow, human beings can build undersea cities to open up the living space of human beings.

You must give me the best, I typed it word by word.