题型：阅读选择 题类： 难易度：普通
浙江省杭州市建兰中学2023-2024学年九年级上学期期末英语试题
Without the Intent or phones, communicating long distance is limited. Yet throughout history, cultures have developed ways to produce messages that travel miles. Morse Code is a system of communication. It uses patterns of signals to send and receive messages, often with a machine called a telegraph.
A telegraph is a machine that creates different signals from different messages. These signals are then changed into electrical current. They are sent across a wire. They can travel long distances, such as across the country or ocean. Another telegraph receives these signals. The machine changes the signals back into the original message.
In Morse Code, there are three types of signals. They are dots, dashes, and pauses. Dots (·)are the short noises or flashes of light. Dashes(一)are longer noises or flashes of light. Spaces( )are the pauses. Patterns of these signals represent letters, numbers, and punctuation marks. In Morse Code, letter A is one dot and one dash, letter E is one dot, letter I is two dots. As for consonants, letter C is one dash, one dot, one dash and one dot, letter D is one dash and two dots, Letter T is one dash.
Morse Code was invented in the United States by Samuel Morse during the 1830s. People soon realized that the code could not transmit all messages in other languages. To fix this problem, a newer version called the International Morse Code was developed. International Morse Code is simpler and more exact. For example, the original Morse Code could only represent a few of the letters. The International Morse Code, on the other hand, is for all letters.
① The signals are sent across a wire. ②The signals are changed back to letters.
③Another telegraph receives these signals. ④ The telegraph changes signals to electricity.
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There are many colors in nature. But do you think that a color has weight? Let's do a test.
First, put two objects with the {#blank#}1{#/blank#} weight into two boxes. Then cover the boxes. Third, wrap (包裹) one box with a red piece of paper, the other with white. Now hold the boxes {#blank#}2{#/blank#} your hand one by one. Which one is {#blank#}3{#/blank#} ? It is certain that you will think the red one is heavier. Why do you think so? A scientist did many {#blank#}4{#/blank#} and found that different colors have different weights in a man's mind.
Also, scientists say that people accept the colors they like, and {#blank#}5{#/blank#} the colors they hate. So your body and mind will be {#blank#}6{#/blank#} by using the colors you like. Or you'll be nervous {#blank#}7{#/blank#} even get ill. For example, you {#blank#}8{#/blank#} blue and hate red. If you stay in a room with red windows and wallpaper for two hours, you'll feel you have been there for {#blank#}9{#/blank#} hours. But if the room is blue, you'll feel you have been there for only an hour, And, if a person walks {#blank#}10{#/blank#} of a blue room and into a red room, his temperature will rise. That means our body temperature will change with different colors.
How bloody a scene!
Blood Falls in Antarctica is a waterfall (瀑布) which shoots blood-red water into a river. The sight is a perfect background for a horror film: mysterious and of course bloody. Its special color was long believed to be caused by red algae (红藻) . Until 2017, the true cause of the so-called blood was proved to be oxidized iron in saltwater. ____
Impressive yet a dangerous sight, frozen bubbles (气泡) can beseen in winters at Abraham Lake in Canada. When methane (甲烷) gas gets crowded underwater and freezes, it will finally form this special sights—frozen bubbles. Such plenty of methane ishighly risky. So even a lit match nearby can cause an explosion (爆炸). Mirror of the Sky
During the new moon and full moon periods, tourist can see aclear reflection of the sky in the waters of Sasaran Beach in Malaysia. The smooth sand and lowest water level create such anunbelievable sight. Also known as the "Mirror of the Sky", this water beach is an amazing place to take pictures and thus a perfecttravel destination. |
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What kind of story is most exciting? What story keeps you reading until the very end? The answer may be the detective (侦探) story.
Detective stories are among the most {#blank#}1{#/blank#}, read and discussed stories in the world. They can be novels, animation (动画) and movies. When we start reading a detective story, we always wish to find out the truth {#blank#}2{#/blank#} we reach the end. But it can be quite difficult to solve the problem as quickly as the detective does. Paying attention to the following elements (元素) may be {#blank#}3{#/blank#} to find the truth.
Motivation—Motive is the reason behind a crime. Does this person have a motive? This is a question always asked by detectives. To answer that, detectives would look into one's personal {#blank#}4{#/blank#} and past experience. People {#blank#}5{#/blank#} a motive can be trusted.
Suspect—Suspects are those who may have done the crime. {#blank#}6{#/blank#} there is more than one suspect in a case. Detectives have to find out the real {#blank#}7{#/blank#} among them.
Clue—Clues are the most important things in finding out the truth. Clues can be very small and hard {#blank#}8{#/blank#}, such as hair, mud or a piece of paper from a diary.
Alibi—An alibi is a special kind of evidence (证据). It means you are not being at the crime scene when the crime took place. For example, if you are having dinner with a friend when the crime happens, your {#blank#}9{#/blank#} words are your alibi. However, an alibi can not always be {#blank#}10{#/blank#}. Your friend may have made up a story to protect you.
Detective stories are like puzzles. Following the elements of motive, suspect, alibi and clue can help us see what the detective see and find out the truth in the end.
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