下列有关新闻事件的叙述正确的是[ ]
A. 在结冰的路面上撒盐，是利用盐与水发生化学反应放出大量热量，促使冰雪融化
B. 我国决定推广使用车用乙醇汽油，乙醇汽油是一种新型的化学物，属于可再生能源
C. 利用可降解的生物质材料“玉米塑料”（主要成分为聚乳酸）替代一次性饭盒，可防止产生白色污染
D. 氮化硅陶瓷可用于制造新型柴油发动机是因为氮化硅陶瓷具有较大的硬度
答案：C
People live in different houses. You may know a wooden house or a paper house. But do you know a(n) 36 house? In 2008, the first ice house in North America opens its 37 to welcome some visitors. The floors, windows and walls are all made of ice. It has ten bedrooms 38 twenty people can stay there each night. Visitors to the house 39 in ice beds, sit on ice chairs and eat from ice plates. Well, the toilets are not made of ice, of course. It’s usually below zero so it is very 40 inside the house. However, do the visitors just sit there to 41 warm? No, visitors have to 42 special clothes. These can make 43 feel warm until morning. Workers 44 about four weeks designing the ice house. Visitors can only stay in this ice house in winter. It isn’t 45 in hot summer. Because this house is so special, it is becoming popular with young people.
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