初中英语的演讲稿1
At first, you must understand the meaning of climate change. It means any long-term significant change in the average weather, which may include average temperature, precipitation, wind patterns and so on. For example, Australia is experiencing rapid climate change. Since the middle of the twentieth century, Australian temperatures have risen by about average one temperature degree with an increase in the frequency of heat waves and a decrease in the numbers of frosts and cold days. Rainfall patterns have also changed, which means that the northwest has seen an increase in rainfall over the last fifty years while much of eastern Australia and the far southwest have experienced a decline. From this example, it indicates climate change that is occurring today has sped up, and affects long-term weather. The Earth’s climate is largely affected by how much heat is stored in the atmosphere. Furthermore, the climate change is caused by dynamic process on Earth, external forces including variations in sunlight intensity, and more recently by human activities.
The most important reason of climate change is caused by humans, because humans produce a lot of carbon dioxide into the air. This carbon dioxide emits from fossil fuel, aerosols, cement manufacture, land use, animal agriculture and deforestation. For example, trees can take in carbon dioxide to produce oxygen by photosynthesis. If people cut many trees for making furniture, paper, or sell wood to make money, there is much more carbon dioxide in the air. Beginning with the industrial revolution in the nineteenth century and accelerating ever since, the human consumption of fossil fuels has raised carbon dioxide levels rapidly. It means that carbon dioxide levels are substantially higher now than before. On the other hand, during the procedure of manufacturing cement, which is used in buildings, significantly more carbon dioxide is produced. While people improve their living standard, they cause climate change. When people burn coal, oil, and gas for our electricity, carbon dioxide is produced. When people burn fossil fuel to move vehicles, carbon dioxide is also produced. These sorts of examples indicate that humans are the real culprit. They do not consider the consequence, while they enjoy producing every thing they want.
It is not just man-made pollution of the atmosphere which can cause climate change. Changes in the amount of carbon dioxide in the air have occurred naturally during the history of the Earth, leading to climate changes. When a volcano erupts, it releases huge amounts of carbon dioxide and sulfur dioxide into the atmosphere. However, volcano eruptions cannot effect climate change. The main reason is that before the volcano erupts, it would release huge amount of carbon dioxide and sulfur dioxide for a very long time. This pollution injected into the air blocks out a lot of sunlight. Therefore, it can cause the Earth to cool over fewer years. For example, in April 1991 eruption of Mount Pinatoba, where is in the Philippine islands, emitted huge amounts of carbon dioxide and sulfur dioxide into the air. The movement of the Earth’s axis also affects climate change; it moves a little more than a half-degree each century. Other processes can change the Earth’s climate over millions of years. When not only continents move around the world, but also mountains ranges are built, the changing patterns of landmasses affect the way the heat in the atmosphere and in the oceans is stored. In addition, changes in the way ocean water circulates around the world can affect the climate, because the oceans store even more heat than the atmosphere. Once ocean currents change direction, slow down, or reverse, it has a significant impact on climate.
Climate change is mainly caused by carbon dioxide. This can be separated to two important parts: natural causes, and human causes. After we realise what the two important factors of climate change are, and what the climate change is, we could try to think of a more effective solution to solve the climate change problem to make a higher quality environment.
初中英语的演讲稿2
The Mirror and I
I like to look into the mirror. I remember when I was a little girl, I often stood on my toes, trying to find my face in the mirror of the dressing table, which was nearly as high as I was. Now I still like to look into the mirror. Only now, the dressing table is too low for me. As I bend down, I see the face of a young woman, glowing with maturity, confident in her future and fascinated with her own reflection.
The fact that I like to look into the mirror has to do with my granny with whom I spent most of my childhood. I remember clearly that one night I heard her murmuring, "Women can't be seen. Women can't be seen." I was so confused as to look into the mirror the next morning to check if I could indeed see myself. Only now as a young woman myself, can I understand that it was not physical visibility that granny had on her mind.
Granny spent all her life taking care of the family, day in and day out. She cooked for her husband and 10 children. But whenever guests came, she and other female family members had to eat by the stove in the small kitchen. At family discussions, she was never asked for her opinion. After grandpa passed away, she had to listen to my uncle, her eldest son, fulfilled her duty as daughter, wife, and mother; yet as a person, she remained little noticed. Even though she could see herself in the mirror of the dressing table, she was never visible in the mirror of society.
I have been living a different life. At home, I make decisions together with the rest of the family. In school, I often take charge of various activities the same as other boys and girls. Not only that, I can see something granny could not have dreamed of─making decisions for my own future. My life has been a series of decisions. I could choose from several universities as I came out of high school. At university, I could choose from a range of subjects from English literature to business law. And now upon graduation, I am again faced with decisions─to further my study or to go to work; to stay in China or to go abroad; to get married right away or to remain single for a bit longer.
It does not matter whether or not I will become famous or rich, but I will treasure the chance to demonstrate my potential and to help other women demonstrate theirs as full members of society, fully visible in the mirror of history. I will treasure it because the abundance of choice that I enjoy came only after decades of efforts made by my granny, my mum, and millions of other Chinese women.
However, the choices to be made by me and others of my generation are a great challenge. The misconception that men are superior to women is still dominating many people's minds. While men are encouraged to compete and to assert themselves, we are expected to be quiet, loyal and obedient. This is not very different from what is expected of us as good wives and good mothers. The challenge we face calls for a higher level of our personal development and self-determination.
The story of my grandmother and myself mirrors the lives of millions of other women in China and perhaps in the world. Many of them still lead the life of my grandmother. Their worth is not yet recognized. It is the responsibility of a young person like me to work hard and struggle hard so that they too will see themselves and will be seen in the mirror of society.
This is my dream. This dream, I believe, is not only shared by our grandmothers, mothers and sisters, but also by many of our fathers, brothers, husbands and male colleagues.
It will not come true until everyone fully realizes that women can contribute to society and should be guaranteed the right to do so. Women hold up half the sky.