Five million people visit Grand Canyon in the US every year. For the purpose of helping project Grand Canyon for your fellow visitors and future generations, please follow the guidelines below.
Camping
To protect the park, camping is allowed only within permitted campgrounds. Permits are required for overnight camping at the North Rim. Advance booking can be received by mail. Please write: Information Center, P. O. Box 129, Grand Canyon, AZ 86023
Fires
Because of the extreme fire danger, campfires are not allowed except at Mather and Desert View campgrounds. Collection of firewood is not allowed either.
Hiking(远足)
Please stay on permitted paths. If you don’t do so, you may destroy desert plants. Pack out what you pack in, so you leave no signs of your visit. It is important to keep in mind that you are in a national park where wildlife exists.
Weather
The weather at Grand Canyon can change very quickly. With so much rock, lightning(闪电)causes a particular danger during sudden summer storms. These storms also frequently bring floods inside valleys, a danger to hikers. Watch the skies and check daily weather reports.
Wildlife
Do not feed park wildlife. There have been a few cases at Grand Canyon National Park where deer were purposely shot because they ate plastic bags that left them sick and weak. Hungry deer can be a danger and have kicked and bitten visitors at Grand Canyon. Some other animals will also beg and bite. For your own safety and the well-being of the animals, please do not feed wildlife, no matter how gentle they may appear.
【小题1】 What can you do first if you want to go camping?

Last night was the last game for my eight-year-old son's soccer team. It was the final quarter. The score was two to one, my son's team in the lead. Parents surrounded the playground, offering encouragement.
With less than ten seconds remaining, the ball suddenly rolled in front of my son's teammate, Mickey O’ Donnel. With shouts of "Kick it!" echoing（回响）across the playground, Mickey turned around and gave it everything he had. All around me the crowd erupted（爆发）. O'Donnel had scored!
Then there was silence. Mickey had scored all right, but in the wrong goal, ending the game in a tie. For a moment there was a total hush. You see, Mickey has Down syndrome (唐氏综合症) and for him there is no such thing as a wrong goal. All goals were celebrated by a joyous hug from Mickey. He had even been known to hug the opposing players when they scored.
The silence was finally broken when Mickey, his face filled with joy, hugged my son tightly and shouted, "I scored! I scored. Everybody won! Everybody won!" For a moment I held my breath, not sure how my son would react. I need not have worried. I watched, through tears, as my son threw up his hand in the classic high-five（致礼）salute and started chanting, "Way to go Mickey! Way to go Mickey!" Within moments both teams surrounded Mickey, joining in the chant and congratulating him on his goal. Mike happily and everyone sent their wishes to him.
Later that night, when my daughter asked who had won, I smiled as I replied, "It was a tie. Everybody won."
【小题1】Which is the most correct description of the author’s too? He was/had       .

--- Did Peter come back early last night?
--- Yes. It was not yet eight o’clock _________ he arrived home.

Online shoppers would rather receive an offer for a product or service than make their own offer ₃ according to a study led by a Michigan State University scholar that has implications for the fast-growing e-commerce industry. The findings may come as a surprise given that shopping online is an anonymous(匿名的）process that seemingly can give consumers more confidence to drive a hard bargain_,said Don Conlon ，Professor of Management in MSU’s Broad College of Business.
But the study found that participants who made their own offers were less successful in sealing the deal and ，when they were successful_? worried they overpaid Many shoppers found the process of researching an offer to be a hassle. “ Americans are very busy，and it’s less time-consuming to be the one receiving the offer rather than the one proposing the offer  ” Conlon said. ^u People tend to be happier when they’re in the receiver role. ”
Online spending in the United States is expected to jump 45 percent in the next four years， from $ 226 billion this year to $ 327 billion in 2017，according to Forrester Research Inc. Nevertheless, researches into this prosperous market remain largely focused on the strategies of companies, rather than those o£ shoppers. Conlon^’s study is ，obviously, a rare exception.
Conlon got the idea for the study after considering the difference between two popular sites for hotels and airline flights, priceline.com, which takes bids, and hotwire.com ，which provides offers. Using these two models ，Conlon and his fellow researchers conducted a series of experiments with more than 850 people who were charged with booking a fictional hotel room and acquiring a fictional antique car. Not only did participants prefer to receive bids, Conlon said ，but they also secured more deals in that receiver role. Further ，when they had to make the bids ，they were left more mentally taxed and regretful.
From an industry perspective，putting customers in the receiver role may help fill more hotel rooms and airplane seats. “If you’re a business with a lot of products₃ ” Conlon said，“you may want to be the one making the offers. ” However, when selling single items, such as an antique car， accepting bids may be a better option since that typically drives up the price, he said.
【小题1】What can we learn from Para. 1?

D
“I started going to clubs when I was nineteen. My friends went and they told me that I’d love it. They were right.” –Lara
Lara is a twenty-one-year old student who loves dancing. “At the moment, my favorite kind of music is acid jazz. I’d love to go to a Fatboy Slim or Ken Ishii gig. They’re so cool,” says Lara. Fatboy Slim and Ken Ishii are not pop stars—they are famous DJs. Being a DJ these days means more than playing records at a nightclub. DJs like Fatboy Slim have also produced a lot of successful CDs of their own music.
Nightclubs have been popular since the seventies but today’s clubs are different. They don’t usually open until at least 11 pm, and people often stay until 7 or 8 o’clock the next morning. Some clubbers will keep on dancing until 12 o’clock in the morning.
Why has dance music become so popular? Some people believe that clubs give young people what the hippies found in the sixties. They have somewhere to meet people just like them. Many clubbers say that dance music helps them to escape from their problems. They feel they are part of a big happy family. But most people just love to dance.
Dance Dictionary
So, what is the difference between Garage and High Energy? Not sure? Well, you’re not alone! There are lots of different types of dance music. A few are described below.