题目

已知函数,,若的反函数的图像经过点，则            . 答案：4；       阅读理解 　　Malls are popular places for Americans to go to. Some people spend so much time at malls that they are called “mall rats”. Mall rats “shop until they drop” in hundreds of stores under one roof. 　　People like malls for many reasons. They feel safe because malls have police stations or private security guards. Parking is usually free, and the weather inside is always fine. The newest malls have beautiful rest areas with waterfalls and large green trees. 　　The largest mall in the United States is the Mall of America in Minnesota．It covers 4.2 million square feet. It has 350 stores, eight night clubs, and a seven-acre park! There are parking spaces for 12,750 cars. About 750,000 people shop there every week. 　　The first indoor mall in the United States was built in 1965 in Edina, Minnesota．People loved doing all their shopping in one place. More malls were built all over the country. Now, malls are like town centres where people come to do many things. They shop, of course. They also eat in food courts that have food from all over the world．They see movies at theatres. Some people even get their daily exercise by doing the new sport of “mall walking”. Others go to malls to meet friends. 　　In some malls, people can see a doctor or a dentist and even attend church. In other words, people can do just about everything in malls. Now residents can actually live in their favourite shopping centre. (1)Malls are ________. [　　] A．large shopping centres which also act as town centres B．large parks with shops C．the most popular places American go to D．town centres (2)Why have malls become so popular? [　　] A．Because people can do everything there. B．Because people can do many other things besides shopping for all they need． C．Because people feel safe in malls with police stations around． D．Because people enjoy the fresh air and can have a good rest there. (3)Malls have to be large places because ________. [　　] A．many people drive their cars to go to malls B．there have to be some restaurants, clinics and theatres C．many people hope to do sports in the malls D．they have to meet different needs for many people (4)In doing “mall walking” people ________. [　　] A．shop until they drop B．do just about everything C．walk around the mall as a kind of exercise D．see movies at theatres