问题
填空题
浓硝酸储罐的材质通常是（），浓硫酸储罐的材质通常是（）.
答案
参考答案：不锈钢；钢
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浓硝酸储罐的材质通常是（），浓硫酸储罐的材质通常是（）.
参考答案：不锈钢；钢
| 任务型读写 阅读短文,根据所读内容在文章后表格中填入最恰当的单词,每空限填一词. People traveling long distances frequently have to decide whether they would prefer to go by land, sea or air. Hardly anyone can positively enjoy sitting in a train for more than a few hours. Train carriages soon get full of passengers and stuffy. It is almost impossible to take your mind off the journey. Reading is only a partial solution, for the noise of the wheels clicking on the rails soon makes you sleepy. During the day, sleep comes in short periods. At night, when you really want to go to sleep, you can rarely manage to do so. Surely you arrive at your destination almost worn out. Long car journeys are even less pleasant, for it is quite impossible even to read. On motorways you can, at least, travel fairly safely at high speeds, but more often than not, the greater part of the journey is spent on roads with few service stations and too much traffic. By comparison, ferry trips or cruises offer a great variety of civilized comforts. You can stretch your legs on the spacious decks, play games, meet interesting people and enjoy delicious food-always assuming, of course, that the sea is calm. If it is not, and you are likely to get seasick, no form of transport could be worse. Even if you travel in ideal weather, sea journeys take a long time. Airplanes have the reputation of being unsafe and even hardened travelers are afraid of them. They also have the disadvantages of being an expensive form of transport. But nothing can match them for speed and comfort. Traveling at a height of 30,000 feet, far above the clouds, and at over 500 miles an hour is a very exciting experience. You do not have to think out ways of taking your mind off the journey, for an airplane gets you to your destination rapidly. For a few hours, you settle back in a deep armchair to enjoy the flight. The real enjoyment is to watch a film and drink wine on some services. But even when these things are not available, there is plenty to keep you occupied. A plane offers you an unusual and breathtaking view of the world. The journey is so smooth that there is nothing to prevent you from reading or sleeping. No matter how you decide to spend your time, one thing is certain: you will arrive at your destination fresh and energetic. You do not have to spend the next few days recovering from a long and arduous journey.
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