阅读理解 Powerbocking is enough to realize anyone's dreams of super powers:jump six feet in the air and run at 25 miles an hour or more.But,instead of costing six million dollars,you can get a pair of "powerbocks"for just a couple of hundred. Mankind seems to have a strong desire to get off the ground.In the late 1890's stilt walking(踩高跷)attracted Europe,with Sylvain Dornon walking from Paris to Moscow on stilts in 58 days. The inventor of the Powerbock,German engineer Alexander Boeck,studied the movements of kangaroos in order to develop his original design.And the Powerbock allows humans to extend their ownAchilles tendon(跟腱)to come close to the length and power of those in animals like kangaroos.As a result,exercising using the stilts reduces wear and tear on feet and knees while still giving the body enough exercise. Powerbocking is considered as a form of exercise.You'll burn calories five times faster than jogging andit employs 95% of the body's muscles.It's also an extraordinarily easy form of extreme sport to take up -itonly takes about 30 minutes to the basics. For a start,you'll instantly add 18 inches to your height.And then you'll be capable of the most extraordinary skills of athleticism.Flipping(翻)backwards 20 times in 20 seconds to set a Guinness WorldRecord,for example,or leaping over cars.Acquiring them_is an awful lot of fun.It's not surprising that Powerbocking has been turning up everywhere-on talent shows,commercials and even as part of the closing ceremony at the 2008 Beijing Olympic s. But,he warned-if you're interested in taking up this sport,you need to know that no one can agree whatit should be called.The equipment is sometimes referred to as power stilts,jumping stilts,kangaroo boots and many more.But there seems to be general agreement that the sport ought to be named "Powerbocking"in honor of its inventor,Herr Boeck. 1. What do we know about Powerbocking from the passage? A. It is difficult to learn.B. It doesn't cost much money.C. It is a kind of ordinary sport.D. It was invented in the late 1890's 2. What can we infer from the passage? A. Powerbocking can help people lose weight.B. Power stilts and kangaroo boots are two different things.C. Alexander Boeck is good at stilt walkingD. The invention of the Powerbock was inspired by stilt walking. 3. What does the underlined word "them"in Paragraph 5 refer to? A. Leaptover cars.B. Talent shows and commercials.C. Guinness World Records.D. Extraordinary skills of athleticism. 3. People think the sport should be called "Powerbocking"because _____. A. it should have a regular name B. they want to honor its inventorC. the name has a long historyD. the name sounds most interesting 15. What is this passage mainly about? A. The way to learn Powerbocking.B. The advantages of doing exercise.C. An introduction to Powerbocking.D. The history of Powerbocking. 6. 用20个词左右概括文章大意______________________________________________________________________________________________________________