高二英语必修五课后练习.：Unit2-3

能力提升Ⅰ.阅读理解On June 15th, 2012, millions of people watched as 33-year-old Nik Wallenda walked across one of the world's greatest waterfalls on a tightrope(钢丝). What made the 25-minute walk that was televised live and watched by over 13 million people worldwide even more amazing, is that it was done over the Niagara Falls—An action that had never been attempted before.Even though Nik was wearing a harness(保护带), a safety measure provided by ABC, the television network that broadcast the event, his action to keep his balance against the strong winds made for some heart-stopping(令人担忧的) moments for the audience.Nik, however, never slowed down for even one moment.Wearing special shoes made by his mother, he remained totally focused on the job at hand.It was only when he got to the last stretch near Canada's Table Rock that he knelt down on one knee and finally broke into a smile.Waving and blowing kisses to the cheering audience, he knew he had accomplished a great task, which most people had thought impossible.While he described the whole experience as peaceful and relaxing, Nik said his biggest challenges came from a totally unexpected source—his 40 pound balancing pole.The balancing pole was so heavy that he could hardly carry it on the tightrope.One would think that now that Nik has realized his lifelong dream he would be ready to hang up his “balancing pole”. However, the adventurer who already has seven Guinness World Records under his belt, is just getting started-Next up? A 5,000-foot tightropewalk across the Grand Canyon.While the one across the Niagara Falls took years of planning because he had to convince the US and Canadian officials, this one should happen in the very near future. That's because, the Florida resident has already been granted(授予) a permit by the Canyon officials.1．Why did so many people fix their attention on the event?A．Because it was done by Nik Wallenda.B．Because nobody had done it there before.C．Because it was broadcast live by ABC.D．Because it was impossible to do the event.2．What made the audience hold their breath during Nik's performance?A．How Nik managed to cross the Niagara Falls with safety measure.B．What Nik would do when he lost his balance on the tightrope.C．How Nik kept his balance against the strong winds.D．How long Nik will take to finish the event.3．What was the greatest difficulty for him to face in Nik view?A．The supplied tightrope.B．The safety belt.C．The balancing pole.D．The audience's noise.4．What does the last paragraph mainly talk about?A．Nik will go on with his dream.B．Nik's life dream is changing.C．Permission of governments is important.D．The Grand Canyon is a dream for Nik.Ⅱ.阅读填句A lot of benefits can be seen from getting enough rest, but for many of us, falling asleep can be challenging. There's plenty of advice about what to do to fall asleep. __1__ Here're some pre-bedtime activities that could be hurting your chance of sleeping well.1．Exercise/Take a hot showerExercise is a vital activity for your health. It can actually contribute to getting better-quality sleep. The problem, though, is that exercising within three hours of bedtime or taking a bath too close to the bedtime can raise your body temperature, and make it more difficult to fall asleep. __2__2．Watch TV/Surf the web__3__ The bright lights of these screens can hold back the development of what promotes sleep. So close that laptop and turn off the TV about an hour before bed.3．__4__Whatever schoolwork it is, it can certainly wait until morning. Getting work down stimulates(刺激) your brain and can cause you unneeded stress—pretty much the opposite of what you want to feel if you're trying to fall asleep!4．Read interesting storiesMany people have done this：you're reading a really interesting novel and suddenly it's 2：00 a．m.! Reading an interesting book before bed will make it difficult to fall asleep. __5__A．Perhaps you need the most boring thing imaginable to read!B．Screen time before bed can disturb your ability to fall asleep.C．Exercising or bathing, then, is best left for earlier in the day.D．Realize the power of a good night's sleep.E．Solve conflicts before you go to bed.F．But what about not to do?G．Busy yourself with workⅢ.短文改错The Siberian tiger is one of the most beautiful animal in the world. It is also one of rarest. Today only about 1,000 are left, some of them are in the Hunchun Nature Reserve. The Chinese government has created the reserve to help saving the tiger's natural habitat. But the Siberian tiger is the only endangered species. Other famous animal in a danger is the giant panda, whose habitat is in China. The panda was the symbol of the World Wide Fund for Nature. Thanks of scientists' hard work, the number of the pandas lived in the wild has increased to about 1590.答案Ⅰ.阅读理解文章主要讲述了在2012年6月15日Nik Wallenda 完成了在尼亚加拉瀑布上走钢丝的表演。