问题
选择题
夏天从冰箱中拿出一瓶饮料，放在空气中，外壁会潮湿，这说明空气中含有（ ）
A．氧气
B．水蒸气
C．二氧化碳
D．稀有气体
答案
答案：B
题目分析：夏天从冰箱中拿出一瓶饮料，放在空气中，外壁会潮湿，这是空气中的水蒸气遇冷凝结成了小水珠。说明空气中有水蒸气，选B。
点评：空气中的水蒸气遇冷凝结成了小水珠，说明空气中有水蒸气的存在，识记内容，难度不大。
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夏天从冰箱中拿出一瓶饮料，放在空气中，外壁会潮湿，这说明空气中含有（ ）
A．氧气
B．水蒸气
C．二氧化碳
D．稀有气体
答案：B
题目分析：夏天从冰箱中拿出一瓶饮料，放在空气中，外壁会潮湿，这是空气中的水蒸气遇冷凝结成了小水珠。说明空气中有水蒸气，选B。
点评：空气中的水蒸气遇冷凝结成了小水珠，说明空气中有水蒸气的存在，识记内容，难度不大。
Several factors make a good newspaper story. First， 1 ，it must be new. But since TV can react to events so quickly, this is often a problem for 2 . They usually respond 3 it in one of three ways. One by providing 4 detail, comment or background information. One by finding a new 5 on the day’s major stories. One by printing completely different stories which 6 doesn’t broadcast. What else? Well—it also has to be 7 . People don’t want to read about 8 , everyday life. Because of this, many stories 9 some kind of conflict or danger. This is one reason why so much news seems to be 10  news, “ Plane lands safely—no-one hurt ”doesn’t sell newspapers. “Plane 11 —200 feared dead !” does .Next, there’s human interest. People are interested in other 12 —particularly in the rich, famous and powerful. Stories about the private lives of pop singers, actors, models, politicians, 13 , all appear regularly in certain newspapers . Finally, for many editors, 14 is an important factor, too. They prefer stories about people, places and events which their readers know. That’s 15 the stories in Tokyo’s newspapers are often very different from the stories printed in Paris, Cairo, New York or Buenos Aires.
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