题目

已知神九火箭中使用的燃料为偏二甲肼（CH3-NH-NH-CH3)和四氧化二氮（N2O4)。在火箭升    空时，燃料发生的反应：CH3-NH-NH-CH3 + 2N2O4 = 2CO2↑ + 3N2 ↑+ 4H2O提供能量，下列叙述正确的是  (     )    A．N2O4是氧化剂，偏二甲肼是还原剂     B．CO2是氧化产物，N2是还原产物    C．偏二甲肼中C的化合价为+4             D．每生成0.6molN2，转移电子数为2.4NAFor the Travel section, writers and editors selected special items to profile from a dozen cities.Brussels: Chocolate.Nearly half the chocolate consumed in the world is eaten in Europe, and Belgium—with average consumption of 14.99 pounds per person a year—certainly covers its fair share. While Brussels, the country’s capital, is home to hundreds of chocolate makers, what makes a visit necessary is the rich heritage of traditional chocolate makers.Budapest: Paprika(红辣椒)The job of preparing Hungarian paprika was once considered too dangerous for mothers to do. A woman who touched her children upon returning from work risked burning them, so only the elderly and unmarried were allowed the delicate task of separating the skin from the flesh. But by the early 20th century, sweeter varieties and a machine turned paprika into a common feature of all Hungarian cuisine.Lisbon: Tiles(瓷砖)Is there a bluer country than Portugal? The blue sky and Atlantic Ocean embrace the land. The blue moods of Fado, the dark folk music, form the national soundtrack. And all across Portugal, the typically—blue designs of azulejos—ceramic tiles—are spread across churches, castles, palaces, university halls, parks. The result is a beautiful land of Christian saints, Portuguese kings, historical glories, aristocrats(贵族) at leisure, seascapes and so on.Madrid: GuitarsWalking into one the Madrid’s storied guitar makers’ workshops can feel like stepping into the past. Curly wood shavings, from the palest pine to ebony, fall onto the floor as artisans(工匠) turn some humble wood into works of art. It’s painstaking work—all done by hand—with classical guitar models and the methods of making them changing little over the last century.【1】What does the job of preparing Hungarian paprika suggest?A. The popularity of Hungarian peppers.B. The difficult of processing peppers.C. The unique tradition in Budapest.D. The hot level of Hungarian peppers.【2】Which city can be a splendid setting for a film?A. Brussels.B. Budapest.C. Lisbon. D. Madrid.【3】What’s the similarity of the four items?A. They’re all treasures of a city.B. They all date back several centuries.C. Their production processes are all painstaking.D. They all win popularity in most European countries.