题型:阅读选择 题类:模拟题 难易度:普通
广东省深圳市2021年中考英语模拟冲刺试题(一)
What color are icebergs (冰山)? White or blue? Surprisingly, there are green icebergs in Antarctica (南极). Their unusual color has confused scientists for years. But scientists have finally solved the mystery of the green icebergs.
Icebergs are large pieces of ice in the sea. Icebergs form after breaking away from glaciers (冰川).
Most icebergs are white. There are also many icebergs in Antarctica that are blue. Glacial ice has a lot of small air bubbles (气泡). The icebergs appear to be blue because the air bubbles reflect blue light.
However, there are no air bubbles in green icebergs, which means these icebergs are made out of sea ice rather than glacial ice.
But why does sea ice look green? Scientists at the University of Washington, US, recently found the reason— iron oxide (氧化铁). It comes from rock dust found on the Antarctic mainland. After studying the green icebergs, scientists found that they have 500 times more iron than glacial ice. The iron comes from bedrock in the ocean. When glaciers grind (碾磨) against bedrock, a powder (粉末) that is rich in iron is created. The powder later mixes with ocean water, which then freezes as green sea ice, Stephen Warren from the university suggested.
This is an important finding because these green icebergs can deliver iron to far parts of the ocean. There, tiny sea plants use the iron as a nutrient (营养物). We thought green icebergs were interesting. But now they may actually be important.
Good basic table manners are important because they help make sure that both guests and hosts are comfortable at the table. Table manners are mostly common sense. Here are some rules that will carry you through most common situations.
{#blank#}1{#/blank#} You may have heard your mother say it many times. You should know that no one likes to see the food in your mouth.
Don't make noises while eating. Making noises is not only unappetizing (倒胃口的), but it can also break others' conversation.
Eat food bit by bít. {#blank#}2{#/blank#} Don't cut all of your meat at one time. This can remind
people of feeding small children and the mess related to this situation.
Eat at a leisurely pace(悠闲地). This rule shows your host that you enjoy the food and the company (陪伴). {#blank#}3{#/blank#} It shows that you're only paying attention to the food and that you would rather be at home watching the grass grow than spend the time with your host.
Don't stand and reach for food far from you. You are not supposed to get in the way of people either eating or talking. {#blank#}4{#/blank#}
Don't forget "please" and "thank you". These are useful words in most situations and especially important at the table.
{#blank#}5{#/blank#} You don't want people to think that you are tired of their company. If you must leave the table, make your excuses clearly. You want to make people think that you would rather remain at the table talking with them than do anything else, but the matter at hand is so important that it must be dealt with at once.
Compliment(称赞) the cook. Even if the food is terrible, say something nice. It is always pleasant to end a meal in a positive way.
A. Excuse yourself when leaving the table. B. Don't speak with your mouth full of food. C. Eating quickly is a sign of disrespect for the host. D. You'd better not put your elbows on the dinner table. E. It is as impolite as standing in front of a TV with other people behind you. F. Cut meat and salad so that part of them don't stay out of your mouth after you put them in. |
A. The Baking Club You can make nice cakes and sweets in the Baking Club. Come and have a try. B. The Chinese Literature Club You can enjoy Chinese literature like Wu Cheng' en' s work Journey to the West. C. The Computer Club You will learn programming in the club. We will teach you some helpful computer skills. D. The Drama Club You can learn how to act and put on a play. We have some experienced teachers here to teach you. E. The Craft Club Do you want to make things with your hands? In our club, you can learn how to make kites and paper-cuttings. F. The Science Club Our club welcomes every student who has interest in science. If you join our club, you will do amazing experiments. |
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