题型:阅读选择 题类:真题 难易度:普通
浙江省温州市2019年中考英语试卷
Many objects in the universe are invisible, but they send radio waves. The radio telescope* thus appeared, and it is considered one of the greatest inventions in the twentieth century. Reber built the world's first radio telescope in 1937. Ryle and Hewish developed radio telescope systems for the location of weak radio sources, and they shared the Nobel Prize for Physics in 1974.
A radio telescope is usually made up of:
One or more antennas to collect the radio waves. Most antennas are made in the shape of a dish to collect and reflect, the radio waves to the sub—reflector, in the same way as a curved mirror focuses visible light to one point.
A receiver and amplifier to receive the radio waves from the sub—reflector, and make these weak radio waves strong enough to be recorded and turned into electronic signals. To make an amplifier sensitive enough, it is usually cooled to, very low temperatures (e. g. as low as —270℃).
A recorder to keep a record of the electronic signals. Most radio telescopes today keep the signals to the computer's memory disk for astronomers to analyze later.
Radio wavelengths are much longer than those of visible light, and the radio waves from deep space are always weak. To catch Radio wavelengths are much longer than those of visible light, and the radio waves from deep space are always weak. To catch these waves, radio telescopes usually have huge antennas. The sizes of most antennas in use today are around 50 to 300 metres in diameter. The antenna of FAST in Guizhou, China, the latest and largest radio telescope in the world, is 500 metres in diameter, as large as the size of 30 football fields.
To avoid interferences, and keep the telescopes sensitive, radio telescopes are built in places where there are no human radio waves or electronic signals. For example, FAST is 5 kilometres away from the closest village and 25 kilometres away from the nearest town.
Radio telescopes create pictures of the sky, not in visible light, but in radio waves. This is extremely useful, because there are objects that can't be seen, objects that we wouldn't even know without radio telescopes.
Whether you're spending time with family and friends or hoping to catch dinner, fishing is a great way to enjoy the outdoors. Here are some tips before you start fishing.
Go where the fish are.
Talk to other fishermen to get some tips on locations for fishing. Public lakes, rivers, and ponds are usually your best choice.
If you live on the coast, ocean fishing is a good choice, but you'll need a license(许可证) for ocean fishing.
Find out what people fish for in your area.
Many newspapers have local fishing reports.
Catfish are common river and lake fish all over the United States.
In the south, gar and bowfins are common in swampy (沼泽地的) regions.
In the northwest, rainbow trout are well stocked and common.
If you want to find out what kind of fish are around, throw in some food and wait a few minutes.
Fish at the right time of day.
Most freshwater fish come out to eat at dawn and at dusk, making sunrise and sunset the most effective(有效的) fishing hours.
Fishing {#blank#}1{#/blank#} | |
Go where the fish are | Ask other fishermen for some advice on locations for fishing. Fishermen need to get a {#blank#}2{#/blank#} for ocean fishing. |
{#blank#}3{#/blank#} what people fish for in your area | Many newspapers report local fishing. Catfish are common in the rivers and lakes in the US. Gar and bowfins usually live in the southern swampy areas. Rainbow trout are well stocked and common in the northwest. If you want to find out what kind of fish are around, throw in {#blank#}4{#/blank#} and wait a moment. |
Fish at the right time of day | Sunrise and sunset are the most effective {#blank#}5{#/blank#} because most fish come out to eat at dawn and dusk. |
Seasonal fatigue(季节性疲劳) is common to everyone. When it comes to a new season, people have to get used to the changes in temperature. {#blank#}1{#/blank#} To do better in your study and exams at school,it is necessary for you to learn how to deal with seasonal fatigue.
{#blank#}2{#/blank#} It may be helpful. Because it's not only a great way to connect with others, but also a way to make you happy and relaxed.
Lack(缺少) of sleep is also one of the main reasons of fatigue. {#blank#}3{#/blank#} When it is 11 o'clock in the evening, each part of your body starts to rest. So you should plan your time seriously and go to bed on time.
Keep drinking water though you are not thirsty. In the northern part of China, the weather is very dry. When you are short of water, your body may feel weak. Taking in enough water is necessary. You can not only drink water but also eat some waterfilled food, such as fruit and vegetables. {#blank#}4{#/blank#}
Combing(梳) your hair helps keep awake. According to the traditional Chinese medicine, combing your hair may not only keep your mind active, but also be good for your health.
{#blank#}5{#/blank#} All in all, there are many advantages to combing your hair more often.
A. Usually it's easy to feel tired or sleepy. B. Getting up early can be a good choice. C. Getting around seven or eight hours' sleep will be helpful. D. In some way, combing hair is also helpful to reduce pressure. E. Invite a friend to do sports or daily exercise with you during the breaks. F. This kind of food can help you clear the waste which makes you tired and sleepy in your body. |
Recently, a new kind of bike called the shared bike has appeared in many cities in China. Shared bikes are easy and cheap to use. First, you download the app of a shared bike onto your smart phone. Then when you want to unlock and ride a bike, you just scan the two— dimensional code(二维码) on the bike with your smart phone. The GPS—supported app helps position the bikes no matter where they are parked. And they can be left in public places for the next users. If you need a bike, you can easily find the nearest one through the app. A 30—minute ride costs only 0.5 to 1 yuan.
Among different kinds of shared bikes, Ofo and Mobike are the most popular ones. It is said that in the first week of this year there were 585 million active users of Mobike and Ofo had 1.4 million users. Ofo, which got its name from the look of a bicycle(Ofo), was first used by students in Peking University and soon became popular out of the university.
"In places where the subway doesn't get to, or places where it's difficult to change from one kind of transportation to another, it's easy to get where you want to go with a shared bike."said Hu Hong, one of the users from Shanghai.
Information Card
The advantage of shared bikes | {#blank#}1{#/blank#}. |
The price of a 30—minute ride on a shared bike | {#blank#}2{#/blank#}. |
The two most popular kinds of shared bikes | {#blank#}3{#/blank#}. |
The number of users of Ofo in the first week of this year | {#blank#}4{#/blank#}. |
The city Hu Hong lives in | {#blank#}5{#/blank#}. |
The 19th Asian Games was held from September 23rd to October 8th in Hangzhou,Zhejiang province. During 15 days,players competed for 483 gold medals. There were 40 sports and 61 events. Esports(电竞) and breakdancing(霹雳舞) joined the Games for the first time.
Slogan(口号) The slogan of the Hangzhou Asian Games is "heart to heart,@future". It shows that in the digital era(数字时代),people from all over Asia are connected with each other. |
Medals(奖牌) The medals of the Hangzhou Asian Games are called "Shan Shui". "Shan Shui" shows the beauty of Hangzhou,like its natural landscapes(风景园林),clear water and green hills. |
Mascots(吉祥物) The mascots of the Hangzhou Asian Games are a group of robots called"Memories of Jiangnan". The name comes from a poem by Bai Juyi. He wrote,"When I recall Jiangnan,Hangzhou brings back most of my memories. "The three mascots are named Chenchen,Congcong and Lianlian. They stand for peace and friendship. They are calling out to Asia and the world to meet together in Hangzhou for the Hangzhou Asian Games. |
The Hangzhou Asian Games was a"green"and"smart"Games. There were no fireworks(烟花) let off in the city in the Opening Ceremony(开幕式). It started from the Kongming lanterns at the beginning to the digital fireworks and digital torchbearer(火炬手) in the end. It shows that in the digital era,the technology (技术) in China becomes stronger and stronger.
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