The New York Times recently reported that American teens are hugging practically everyone they see. Say goodbye to the greetings of the past, from the hands-off "What"s up!" to the handshake or high-five ². For young people across the country, hugging is the new "Hello".

    Girls are hugging girls. Boys are hugging boys. Girls and boys are hugging each other. And, like every major trend, there are lots of variations on the form. There"s the classic, full-body, arms-around-the-person bear hug, the casual one-armed side hug, the group hug and the hug from behind. There"s the handshake that turns into a hug and the hug that turns into a pat on the back.

    As trends go, this one seems pretty innocent. But some parents, teachers and school administrators are worried nonetheless. Will young people who aren"t as comfortable with physical contact feel peer pressured into hugging? Willkids who don"t receive hugs feel left Out ³? Could an extra-long hug slide into the more ominous territory of sexual harassment?

    In response to some of these concerns, some schools have set up new rules to limit or eliminate hugging. One school head has created a three-second limitation ⁴ for hugs at her school. A few schools have taken even more drastic measures, placing a ban on all forms of touching between students.

    A few important points are being left out of the discussion. While the US has traditionally been reserved about touching - saving hugs and kisses for relatives, romantic partners and very close friends - people in many other parts of the world have been greeting each other this way for ages.

    In Latin America or Western Europe, in countries like Spain,France, andItaly, a kiss on the cheek is common among women, as well as among women and men who are not romantically involved. The cheek-kiss varies by region.

    Sometimes it is just an air kiss blown past the face. In other places, the proper way of greeting is to deliver a kiss upon both cheeks, or sometimes even a triplet of kisses performed by kissing one cheek, then the other, then back to the first.

    Latin American men are more likely to shake hands when greeting other men,but in some countries likeTurkey, it"s not unusual for men who know each other well to exchange kisses on the cheek. Meanwhile, for the Maori people ⁵ ofNew Zealand, a traditional greeting called the "hongi" involves pressing nosestogether.

    So, from a global perspective, the new trend of teen hugging inAmericais not so "new" after all. People all around the world move in close to say hello,and Americans are just now joining in.

词汇：

touchy ["tʌtʃɪ] 易怒的；敏感的

harassment ["hærəsmənt] 骚扰

triplet ["trɪplət] 三个一组；三件一套

注释：

1.touchy的本意为“易怒的”“敏感的”，这里用来指“喜欢肢体接触的”，标题意味美国人越来越喜欢肢体接触了。

2.high-five:是美国文化手势的一种，并没有正式的中文名称，一般代表了“庆祝成功的击掌”，有时也写成“Give  me - five”。

3.feel left out:感到被排斥

4.three-second limitation:学校制定的将拥抱限制在三秒钟之内的规定

5.Maori people:毛利人（新西兰的土著）

The word "practically" in the first paragraph could be best replaced by——．

A:certainly B:nearly C:actively D:voluntarily

Success, it is often said, has many fathers--and one of the many fathers of computing, that most successful of industries, was Charles Babbage, a 19th-century British mathematician. Exasperated by errors in the mathematical tables that were widely used as calculation aids at the time, Babbage dreamed of building a mechanical engine that could produce flawless tables automatically. But his attempts to make such a machine in the 1920s failed, and the significance of his work was only rediscovered this century.
Next year, at last, the first set of printed tables should emerge from a calculating "difference engine" built to Babbage’s design. Babbage will have been vindicated. But the realization of his dream will also underscore the extent to which he was a man born ahead of his time.
The effort to prove that Babbage’s designs were logically and practically sound began in 1985, when a team of researchers at the Science Museum in London set out to build a difference engine in time for the 200th anniversary of Babbage’s birth in 1992. The team, led by the museum’s curator of computing, Doron Swade, constructed a monstrous device of bronze, iron and steel. It was 11 feet long, seven feet tall, weighed three tons, cost around $500 000 and took a year to piece together. And it worked perfectly, cranking out successive values of seventh-order polynomial equations to :31 significant figures. But it was incomplete. To save money, an entire section of the machine, the printer, was omitted.
To Babbage, the printer was a vital part of design. Even if the engine produced the correct answers, there was still the risk that a transcription or typesetting error would result in the finished mathematical tables being inaccurate. The only way to guarantee error-free tables was to automate the printing process as well. So his plans included specifications for a printer almost as complicated as the calculating engine itself, with adjustable margins, two separate fonts, and the ability to print in two, three or four columns.
In January, after years of searching for a sponsor for the printer, the Science Museum announced that a backer had been found. Nathan Myhrvold, the chief technology officer at Microsoft, agreed to pay for its construction (which is expected to cost $373 000 with one Proviso: that the Science Museum team would build him an identical calculating engine and printer to decorate his new home on Lake Washington, near Seattle). Construction of the printer will begin--in full view of the public--at the Science Museum later this month. The full machine will be completed next year.
It is a nice irony that Babbage’s plans should be realized only thanks to an infusion of cash from a man who got rich in the computer revolution that Babbage helped to foment. More striking still, even using 20th-century manufacturing technology the engine will have cost over $830 000 to build. Allowing for inflation, this is roughly a third of what it might have cost to build in Babbage’s day-in contrast to the cost of electronic-computer technology, which halves in price every 18 months. That suggests that, even had Babbage succeeded, a Victorian computer revolution based on mechanical technology would not necessarily have followed.
Researchers built the calculating difference engine according to Babbage’s design in order to show that ______.

A:Babbage’s intelligence was far ahead of his fellow-men B:Babbage’s idea was reasonable both theoretically and practically C:Babbage’s dream could only be realized in the 20th century D:Babbage’s design was actually imperfect

Success, it is often said, has many fathers--and one of the many fathers of computing, that most successful of industries, was Charles Babbage, a 19th-century British mathematician. Exasperated by errors in the mathematical tables that were widely used as calculation aids at the time, Babbage dreamed of building a mechanical engine that could produce flawless tables automatically. But his attempts to make such a machine in the 1920s failed, and the significance of his work was only rediscovered this century.
Next year, at last, the first set of printed tables should emerge from a calculating "difference engine" built to Babbage’s design. Babbage will have been vindicated. But the realization of his dream will also underscore the extent to which he was a man born ahead of his time.
The effort to prove that Babbage’s designs were logically and practically sound began in 1985, when a team of researchers at the Science Museum in London set out to build a difference engine in time for the 200th anniversary of Babbage’s birth in 1992. The team, led by the museum’s curator of computing, Doron Swade, constructed a monstrous device of bronze, iron and steel. It was 11 feet long, seven feet tall, weighed three tons, cost around $500 000 and took a year to piece together. And it worked perfectly, cranking out successive values of seventh-order polynomial equations to :31 significant figures. But it was incomplete. To save money, an entire section of the machine, the printer, was omitted.
To Babbage, the printer was a vital part of design. Even if the engine produced the correct answers, there was still the risk that a transcription or typesetting error would result in the finished mathematical tables being inaccurate. The only way to guarantee error-free tables was to automate the printing process as well. So his plans included specifications for a printer almost as complicated as the calculating engine itself, with adjustable margins, two separate fonts, and the ability to print in two, three or four columns.
In January, after years of searching for a sponsor for the printer, the Science Museum announced that a backer had been found. Nathan Myhrvold, the chief technology officer at Microsoft, agreed to pay for its construction (which is expected to cost $373 000 with one Proviso: that the Science Museum team would build him an identical calculating engine and printer to decorate his new home on Lake Washington, near Seattle). Construction of the printer will begin--in full view of the public--at the Science Museum later this month. The full machine will be completed next year.
It is a nice irony that Babbage’s plans should be realized only thanks to an infusion of cash from a man who got rich in the computer revolution that Babbage helped to foment. More striking still, even using 20th-century manufacturing technology the engine will have cost over $830 000 to build. Allowing for inflation, this is roughly a third of what it might have cost to build in Babbage’s day-in contrast to the cost of electronic-computer technology, which halves in price every 18 months. That suggests that, even had Babbage succeeded, a Victorian computer revolution based on mechanical technology would not necessarily have followed.

A:Babbage’s intelligence was far ahead of his fellow-men B:Babbage’s idea was reasonable both theoretically and practically C:Babbage’s dream could only be realized in the 20th century D:Babbage’s design was actually imperfect

Text 3 Success, it is often said, has many fathers—and one of the many fathers of computing, that most successful of industries, was Charles Babbage, a 19th-century British mathematician. Exasperated by errors in the mathematical tables that were widely used as calculation aids at the time, Babbage dreamed of building a mechanical engine that could produce flawless tables automatically. But his attempts to make such a machine in the 1920s failed, and the significance of his work was only rediscovered this century. Next year, at last, the first set of printed tables should emerge from a calculating "difference engine" built to Babbage’s design. Babbage will have been vindicated. But the realization of his dream will also underscore the extent to which he was a man born ahead of his time. The effort to prove that Babbage’s designs were logically and practically sound began in 1985, when a team of researchers at the Science Museum in London set out to build a difference engine in time for the 200th anniversary of Babbage’s birth in 1992. The team, led by the museum’s curator of computing, Doron Swade, constructed a monstrous device of bronze, iron and steel. It was 11 feet long, seven feet tall, weighed three tons, cost around $500 000 and took a year to piece together. And it worked perfectly, cranking out successive values of seventh-order polynomial equations to 31 significant figures. But it was incomplete. To save money, an entire section of the machine, the printer, was omitted. To Babbage, the printer was a vital part of design. Even if the engine produced the correct answers, there was still the risk that a transcription or typesetting error would result in the finished mathematical tables being inaccurate. The only way to guarantee error-free tables was to automate the printing process as well. So his plans included specifications for a printer almost as complicated as the calculating engine itself, with adjustable margins, two separate fonts, and the ability to print in two, three or four columns. In January, after years of searching for a sponsor for the printer, the Science Museum announced that a backer had been found. Nathan Myhrvold, the chief technology officer at Microsoft, agreed to pay for its construction (which is expected to cost $373 000 with one proviso: that the Science Museum team would build him an identical calculating engine and printer to decorate his new home on Lake Washington, near Seattle). Construction of the printer will begin—in full view of the public—at the Science Museum later this month. The full machine will be completed next year. It is a nice irony that Babbage’s plans should be realized only thanks to an infusion of cash from a man who got rich in the computer revolution that Babbage helped to foment. More striking still, even using 20th-century manufacturing technology the engine will have cost over $830 000 to build. Allowing for inflation, this is roughly a third of what it might have cost to build in Babbage’s day-in contrast to the cost of electronic-computer technology, which halves in price every 18 months. That suggests that, even had Babbage succeeded, a Victorian computer revolution based on mechanical technology would not necessarily have followed.

A:Babbage's intelligence was far ahead of his fellow-men B:Babbage's idea was reasonable both theoretically and practically C:Babbage's dream could only be realized in the 20th century D:Babbage's design was actually imperfect

Practically all animals communicate through sounds.（）

A:Clearly B:Almost C:Absolutely D:Basically

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A:Clearly B:Almost C:Absolutely D:Basically

{{U}}Practically{{/U}} all animals communicate through sounds,

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{{U}}Practically{{/U}} all animals communicate through sounds.

A:Clearly B:Almost C:Absolutely D:Basically