As we all know that the biggest safety threat which faces airlines today may not be a terrorist attack with a gun, but the man with the portable computer in business class during the flight. In the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic (电磁)interference. The source of this interference remains unconfirmed, but increasingly, some experts are pointing the blame at portable device such as portable computers, radio and cassette players as well as mobile phones.
RICA, an organization which advises the aviation(航空)industry, has recommended that all airlines should ban such devices from being used during"critical "stages of flights, particularly take-off and landing. Some experts have gone even further, calling for a total ban during all fights. Currently, rules on using these devices are left up to individual airlines. And although many of the airlines prohibit passengers from using such equipment especially during take-off and landing, most are reluctant to enforce a total ban, given that many passengers want to work during flights.
The difficulty is predicting how electromagnetic fields might affect an aircraft’s computers. Some experts know that portable devices send radiation which affects those wavelengths that aircraft use for navigation and communication. But because they have not been able to reproduce these effects in a lab, they really have no idea whether the interference might be dangerous or not.
The fact that aircraft may be vulnerable(易受损的) to interference raises the risk that terrorists may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who can’t hear the instructions clearly to turn off his radio because the music is too loud. So it still takes time to impose a ban on the use of portable devices during flights. (total words 311)
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One day, my elder brother and I were coming back from the islands where we often risked going with other fishermen. All at once, the sky over our heads was covered, with dark clouds and in less than a minute we were in a terrible storm. Strangely, it seemed that the storm struck us only. I could clearly see that the sun shone brightly in the area not far away.
With the wind and waves, we were going in the direction of the whirlpool (旋涡). Other fishermen were in a very distant area without noticing what we were experiencing. We shouted for help but in vain. We were hopeless. Nothing could save us. I felt sick, as if I was falling from a mountain top in a dream. We went round and round, nearer and nearer to the horrible edge of the whirlpool. It may appear strange, but at that moment, when we were on the edge of the whirlpool, I felt calmer than when we were moving towards it. I began to think how amazing a thing it was lo die in such a way, and how wonderful it was to see the power of nature. Suddenly, we went over the edge. I thought my life was over. But moment after moment passed, and I was still safe.
The boat was on the inside of the huge whirlpool and we were going round in circles at great speed. I saw clearly that there were other objects in the whirlpool- trees and barrels (桶子). After a while, I became curious about the whirlpool itself. I then made three important observations. The first, the larger the bodies were, the more rapidly they fell; the second, between two objects of equal extent, round objects fell down less rapidly; and the third, between two objects of the same size, objects shaped like a tube fell down more slowly.
注意: 1. 续写词数应为150个左右；
2.请按如下格式在答题卡的相应位置作答。
So I tied myself to a barrel and jumped into the sea.
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Then the sky was clear, the wind calmer, and the sum was shining.
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When I woke up, I felt pains all over. A pool of sticky blood surrounded my head. I lay trapped in the bottom of n smooth-walled pit (坑) with an empty water bottle.
I thought of what had happened. I was climbing down the mountain as I was admiring the beautiful scenery. Accidentally. I stepped on a loose rock. Then I slipped, fell with the rock and got stuck somewhere below the top. It was getting dark in the pit. Only my mother knew where I’d gone. I promised to have lunch with her. Thinking of this. I took my phone out and dialed her number with shaking fingers. No service. The silence, which earlier I’d valued, was now horrible.
With a sharp pain in my head, I was terrified. I knew I’d fallen far, but I wasn’t sure where I was. I called 911 because I knew by the pain that my back was severely injured, if not broken. My ear was torn badly. There was still no service. I dug through my bag to assess my supplies and found a whistle and some wipes.
I put the whistle around my neck and blew, though I knew no one would hear me. It was 1:15 pm and I was miles from the town where I lived. I used the wipes to clean off as much blood as I could. I rested. Then I screamed, blew my whistle, and let myself think the unthinkable. What if they can’t find me? What if this is it?
I decided to get moving. I climbed through a small opening, but when I peered over the next edge, my heart sank: there was a 30-foot drop. There was no way down. I was trapped.
I knew with that extreme Arizona heat in the day and bitter desert cold at night, I wouldn’t last long. But I thought my mother was sure to call the police for help if she couldn’t get in touch with me. With a little hope, I prayed the police would send a helicopter (直升机) to my resecu.
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。
Around five hours later, a growing buzz (嗡嗡声) in the air broke the silence.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Though the pilot saw me, it was difficult for the team to get to me.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________The waves crashed heavily against the rocks, the stormy sea swallowing the once-powerful ship. The only survivor of the shipwreck was brought by the currents to the shore of a small, uninhabited island. His desperate cries for help mixed with the roar of the storm, only to be swallowed by the ocean.
Exhausted and disoriented, he lay on the sandy beach, thanking whatever forces had saved his life. After he surveyed the surroundings, he realized the harsh reality of his isolation. He prayed to God and scanned the horizon for any sign of rescue, but no help appeared. In the midst of despair, he gradually awakened to the fact that he had to survive on this uninhabited island on his own. Driven by great determination, the survivor managed to build a shelter with the driftwood to protect him from the elements, and to store his few possessions.
Days turned into weeks, and weeks into months. The survivor, once stuck in his isolation, started exploring the island’s hidden treasures. His routine became a dull cycle of hunting for food, collecting rainwater, and scanning the horizon for any sign of rescue. But the vast expanse of the ocean offered no comfort, no ship on the horizon to save him.
Despite his loneliness, the survivor clung to hope. The sunrises brought a glimmer of optimism, and he kept scanning the horizon, searching for any trace of rescue.
Then, one fateful day, as he returned from a fruitless search for food, he was greeted by a devastating sight — his shelter was on fire, and the smoke was rolling up to the sky! The worst had happened — the fire had consumed all his possessions, leaving him nothing but the clothes on his back. Desperation and disbelief seized him as he watched the smoke rise to the sky, a cruel demonstration of his misfortune.
注意： 1.续写词数应为150左右；
2. 请按如下格式在相应位置作答。
“God, how could you do this to me!” he cried.
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The rescuers explained that they had seen the smoke signal from the burning shelter.
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