1.多吃水果蔬菜。
2.多饮水,排除体内废物;
3.摒弃不良习惯等。
Eat healthily/Have a healthily diet
Dear Editor,
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
2 . Fresh fish should have a mild smell. Strong fishy smells are the first signs to go bad. How do the fishy smells come from?
It can be several days from when the fish are caught to when they reach the supermarket. In that time, bacteria that grow naturally in fish start to consume a substance called trimethylamine N-oxide(TMAO)in fish. These bacteria change TMAO into trimethylamine (TMA), the substance responsible for the fishy smells. Bacteria in fish can also change lysine(赖氨酸)into cadaverine(尸胺), a substance that’s associated with breaking down the fish once they are caught and giving off fishy smell.
Chemical reactions can also lead to fishy smells. This happens through the oxidation(氧化)of fat. Fish are an important source of omega-3 fatty acids. When these fats are exposed to oxygen, they oxidize and break down into the substance that you can smell.
To slow down the fishy smell, what is beyond question is that the less time between when the fish are caught and when they reach the kitchen, the better. But today, fish are often flown across the globe. To keep smell-producing bacteria at bay, the fish must be frozen or kept at the low temperature possible as soon as they are caught and cleaned.
Controlling fat oxidation can function as well, especially for fattier fish species. While freezing slows bacterial growth, it does not stop fat oxidation. This reaction will occur as long as oxygen is present. Fatty fish are usually not frozen because, despite the cold temperature, they’re going to oxidize pretty fast unless they are stored in a low oxygen container. That’s why those species are often canned.
It’s also important to remember that smell is not always an indicator of safety, especially in processed fish products. “What you might consider the fishy smell may be a delicacy in another culture,” said Carl A. Batt, a professor of food science at Cornell University.
1. Which of the following has the fishy smell?A.Fish fat. | B.TMAO. | C.Cadaverine. | D.Lysine. |
A.Drying them in the air. | B.Storing them in closed containers. |
C.Carefully cleaning them. | D.Exposing them to rich oxygen. |
A.Objective. |
B.Negative. |
C.Acceptable. |
D.Unclear. |
A.Topic—Example—Conclusion. | B.Topic—Comparison—Opinion. |
C.Question——Cause——Solution. | D.Question—Effect—Opinion. |
1.表示感谢;
2.相关介绍;
3.对听众的要求。
注意:
1.词数80左右;
2.请在答题卡的相应位置作答。
Dear fellow students,
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
That’s all, thank you.
注意:
1.词数100左右;
2.开头语和结尾语已为你写好,不计入总词数。
Hello, my name is Li Hua.
_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Thanks for your attention!
Pride and Defeat
I had always prided myself on my talent in debates and arguments. Thus, when I was selected to represent the school in the national debate series, I was naturally confident of my readiness for the task Little did I know that this would turn out to be one of the most important lessons in my life.
The run-up to the finals was a breeze for my team. Our teacher was very experienced and we were all good speakers. My teammates were open to communicate so we showed perfect teamwork. But I was undoubtedly the most outstanding. In each round, the judges had always selected me as the best speaker. This means that my confidence was at an all-time high by the time we found ourselves with one week to train before the finals. I had no reason to even think that I would not be voted the overall best speaker for the debate series.
Unfortunately, I began to get self-focused about the whole business and started putting on airs with my teammates. I saw myself as the natural debater who would be let down by their bad performance. I became so dissatisfied that I began missing practices, which disappointed my kind teammates and teacher. They had no choice but to continue their training schedule.
The day of the finals dawned bright and fine. Actually, I just passed my teammates to enter the hall of the debate finals, feeling the excitement of being able to finally show off my debating power. But the reality was something quite different. My absence from the practices had created a gap between my teammates and me. We could not work perfectly as we did previously. Instead, our teamwork was so bad that even our school supporters were shamed into silence. When it was my turn to conclude as the last speaker of the team, the hall was quiet. Everyone knew that I was the most likely to win the overall best speaker for the series.
注意:
1. 续写词数应为150左右;
2. 请按如下格式在答题卡的相应位置作答。
But as I launched into my speech. I knew that things were very wrong.
______________________________________________________________________________________________________________________________________________________________________________
Suddenly, one of my teammates came up and patted me on the shoulder.
______________________________________________________________________________________________________________________________________________________________________________
1.濒危野生动物的现状;
2.如何改变日常生活方式;
3.发出倡议。
注意:
1.词数: 100词左右,开头已给出,不计入总词数;
2.可适当增加细节
Dear fellow students,
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
7 . As the world seeks to slow the pace of climate change and preserve wildlife, trees undoubtedly hold a major part of the answer. Yet the mass destruction of trees--deforestation-continues, sacrificing (牺牲)the long-term benefits of standing trees for short-term gain.
So, what are the factors leading to deforestation? Farming, animal raising, mining, and drilling combined account for more than half of all deforestation.
Luckily, a movement is under way to preserve existing forest ecosystems and restore lost tree cover. Organizations and activists are working to fight illegal mining and logging. As consumers, it makes sense to look for sustainably produced sources.
A.Yet the effects of deforestation reach much farther. |
B.Globally, forests are disappearing at an alarming rate. |
C.Wildfires and urbanization also account for a small part, |
D.Deforestation affects people and animals and even the wider world. |
E.With these joint efforts, many conservationists see reasons for hope. |
F.Deforestation is responsible for around 15% of all greenhouse gas emissions. |
G.Some deforestation is caused by a combination of human and natural factors. |