阅读理解The author develops the text by _______.

阅读理解B 　　We’ve considered several ways of paying to cut inline: hiring line standers, buying tickets from scalpers (票贩子), or purchasing line cutting privileges directly from, say, an airline or an amusement park. Each of these deals replaces the morals of the queue (waiting your turn) with the morals of the market (paying a price for faster service). Markets and queues—paying and waiting—are two different ways of allocating things, and each is appropriate to different activities. The morals of the queue, “First come, first served,”have an egalitarian(平等主义的) appeal. They tell us to ignore privilege, power, and deep pockets. 　　The principle seems right on play grounds and at bus stops. But the morals of the queue do not govern all occasions. If I put my house up for sale, I have no duty to accept the first offer that comes along, simply because it’s the first. Selling my house and waiting for a bus are different activities, properly governed by different standards. 　　Sometimes standards change, and it is unclear which principle should apply. Think of the recorded message you hear, played over and over, as you wait on hold when calling your bank:“Your call will be answered in the order in which it was received.”This is essential for the morals of the queue. It’s as if th ecompany is trying to ease our impatience with fairness. 　　But don’t take the recorded message too seriously. Today, some people’s calls are answered faster than others. Call center technology enables companies to“score”incoming call sand to give faster service to those that come from rich places. You might call this telephonic queue jumping. 　　Of course, markets and queues are not the only ways of allocating things. Some goods we distribute by merit, others by need, still others by chance. However, the tendency of markets to replace queues, and other non-market ways of allocating goods is so common in modern life that we scarcely notice it anymore. It is striking that most of the paid queue-jumping schemes we’ve considered—at airports and amusement parks, in call centers, doctors’offices, and national parks—are recent developments, scarcely imaginable three decades ago. The disappearance of the queues in these places may seem an unusual concern, but these are not the only places that markets have entered.

阅读理解A San Francisco Fire Engine Tours San Francisco Winery Tour Running: February 1st through April 30th This delicious tour goes through the city on its way to Treasure Islandwhere we will stop at the famous Winery SF

阅读理解What was the author going to that evening?

阅读理解The best title for the passage is _____.

阅读理解Which flight did the woman put Peter on first?

阅读理解In the last paragraph, the Atlantic is compared to __________ .

阅读理解What is the author’s attitude toward the idea of human’s walking on water?

阅读理解C Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries

阅读理解What does Alexander think was the purpose of the 1914 voyage?

阅读理解Tickets to Sea Life Melbourne Aquarium ________.

阅读理解Which of the following is the best title of the passage?

阅读理解Which of the following can be the best title for the text?

阅读理解What is the author's purpose of writing this passage?

阅读理解Which of the following can be the best title for the passage?

阅读理解How did Nicholas keep himself warm?

阅读理解The words "chocolate snobs" in Paragraph 3 probably refer to people who________

阅读理解The main purpose of the passage is to __________.

阅读理解B Passenger pigeons (旅鸽)once flew over much of the United States in unbelievable numbers.Written accounts from the 18th and 19th centuries described flocks (群)so large that they the sky for hours. It was calculated that when it populationzxxk reached its highest point ,they were more than 3billlionpassenger pigeons—a number equal to 24 to 40 percent of the total bird population in the United States, making it perhaps the most abundant bird in the world. Even as late as 1870 when their numbers had already become smaller, a flock believed to be 1 mile wide and 320 miles (about 515 kilometers) long was seen near Cincinnati. Sadly the abundance of passenger pigeons may have been their undoing. Where the birds were most abundant, people believed there was an ever-lasting supply and killed them by the thousands,Commercial hunters attracted them to small clearings with grain, waited until pigeons had settled to feed, then threw large nets over them, taking hundreds at a time. The birds were shipped to large cities and sold in restaurants. By the closing decades of the 19th century ,the hardwood forests where passenger pigeons nested hadbeen damaged by American’s need for wood, which scattered (驱散) the flocks and forced the birds to go farther north, where cold temperatures and storms contributed to their decline. Soon the great flocks were gone, never to be seen again. In 1897, the state of Michigan passed a law prohibiting the killing of passenger pigeons but by then,no sizable flocks had been seen in the state for 10 years. The last confirmed wi pigeon in the United States was shot by a boy in Pike County, Ohio, in 1900. For a time , a few birds survived under human care. The last of them, known affectionately as Martha, died at the Cincinnati Zoological Garden on September 1, 1914.

阅读理解The writer and his family survived mainly due to their________.