现在,学生的零花钱越来越多,但是乱花钱现象很严重。下面是你应某晚报教育在线栏目之...

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Prepackaged, mass-produced snack foods are hugely popular in grocery stores around the world. Many people are accustomed to choosing snack foods in grocery stores.

The first problem with packaged snack foods like cookies, crackers, and other bite-sized options is that they are often loaded with unhealthy materials. The reason for this is fairly easy to understand. Mass-produced foods need to be uniform in color, taste and so on. In order to achieve this uniformity, snack food producers use sugar, salt, and other chemical preservatives (防腐剂) and coloring materials in large amounts. These materials contribute to a rather unhealthy food.

In addition to requiring uniformity of taste and appearance, mass-produced snack foods like potato chips and candies need to be shelf stable. Preservatives and complex packaging make products shelf stable, but this stability and non-perish ability (抗腐性) often come at the expense of nutrition.

One reason that pre-made snacks are so popular in grocery stores is their prices. Food producers can keep costs down by using established production facilities and processes to quickly produce a huge amount of food. Shoppers are drawn to what they see at low prices.

People who are interested in improving the quality of their snacking can use magazines, books, and the Internet to discover a lot of healthy snacking tips and ideas. Even television shows about health and food sometimes talk about healthy snacking alternatives. Some healthy snacks, like fresh fruit, require no preparation at all.

Once people are aware of the drawbacks of clearly cheap and easy snack foods, they can start turning to better options. Soon, perhaps, the old and unhealthy snack options will no longer be profitable for food producers.

There is a famous story about British poet Samuel Taylor Coleridge. He was writing a poem when he was interrupted by a knock at the door.

This was an age before telephones. Someone was delivering a message. When Coleridge got back to his poem, he had lost his inspiration. His poetic mood had been broken by the knock on his door. His unfinished poem, which could otherwise have been a masterpiece, would now never be more than a fragment.

This story tells how unexpected communication can destroy an important thought, which bring us to the cellphone.

The most common complaint about cellphones is that people talk on them to the annoyance of people around them. But more damaging may be the cellphone’s interruption of our thoughts.

We have already entered a golden age of little white lies about our cellphones, and this is by and large（大体上）a healthy, protective development. “I didn’t hear it ring” or “I didn’t realize my phone had shut off” are among the lies we tell to give ourselves space where we’re beyond reach.

The notion of being unreachable is not a new concept—we have “Do Not Disturb” sign on the doors of hotel rooms. So why must we feel guilty when it comes to cellphones? Why must we apologize if we decide to shut off the phone for a while?

Now time alone, or a conversation with someone next to us which cannot be interrupted by a phone, is something to be cherished. Even cellphone devotees（信徒）, myself usually included, can’t help at times wanting to throw their phone away, or curse the day they were invented.

But we don’t and won’t, and there really is no need. All that’s required to take back our private time is a general social recognition that we have the right to it. In other words, we have to develop a healthy contempt(轻视) for the rings of our own phones.

A cellphone call deserves no greater priority(优先考虑的事) than a random(随机的) word from the person next to us，though the call on my cellphone may be the one-in-a-million from Steven Spielberg—who has finally read my novel and wants to make it his next movie. But most likely it is not, and I’m better off thinking about the idea I just had for a new story, or the slice of pizza I’ll eat for lunch.

1.What is the point of the anecdote about the poet Coleridge in the first three paragraphs?

A．To direct readers’ attention to the main topic.

B．To show how important inspiration is to a poet

C．To emphasize the disadvantage of not having a cellphone

D．To encourage readers to read the works of this poet.

2.What does the writer think about people telling “white lies” about their cellphones?

A．It is a way of signaling that you don’t like the caller.

B．It is natural to tell lies about small things

C．It is basically a good way to protect one’s privacy.

D．We should feel guilty when we can’t tell the truth.

3.According to the author, what is the most annoying problem caused by cellphones?

A．People get so obsessed(着迷) with the cellphone rings that they fail to notice anything else.

B．People feel guilty when they are not able to answer their cellphones.

C．Cellphones interrupt people’s private time.

D．With cellphones it is no longer possible to be unreachable.

4.What does the last paragraph suggest?

A．A person who calls us from afar deserves more of our attention

B．Steven Spielberg once called the author to talk about the author’s novel.

C．You should always finish your lunch before you answer a call on the cellphone.

D．Never let cellphones disturb your life too much.

Animals can move from place to place, but plants cannot. When an animal is under attack, it can run away or fight back. Plants certainly cannot run away, and they lack teeth and claws. But plants can defend themselves by using both physical and chemical means.

Some plants have their own ways to keep animals away. For example, the leaves of the holly plant have sharp spines (刺) that discourage grass-eating animals. Holly leaves on lower branches have more spines than leaves on upper branches. This is because the lower leaves are easier for most animals to reach.

Some plants, such as the oak tree, have thick and hard leaves that are difficult for animals to eat. Some grasses may contain a sandy material; eating such grasses wears down the animal's teeth.

Many plants also have chemical defenses. Some plants produce chemicals that taste bitter or cause an unpleasant reaction. Some plants may fight against an attack by increasing the production of these chemicals. When a caterpillar (毛虫) bites a tobacco leaf, the leaf produces a chemical messenger. This messenger sends to the roots the information to produce more nicotine. The higher levels of nicotine discourage the caterpillar.

Many plants depend on both physical and chemical defenses. A certain plant in China, for instance, has prickly (多刺的) leaves, and each prickle contains poisonous venom (毒液). A single experience with this kind of plant will teach an animal to stay away from it in the future.

1.The holly plant has more spines on the lower leaves because most animals________.

A．are not tall enough                      B．like the lower leaves only

C．are not clever enough                    D．can get the lower leaves easily

2.To defend themselves, oak trees use________.

A．chemical means                        B．physical means

C．bitter chemicals                         D．sandy materials

3.How does tobacco protect itself against an attack from a caterpillar?

A．Its leaves fight against the attack by physical means.

B．Its roots send a messenger to discourage the caterpillar.

C．Its roots increase the production of nicotine when it is attacked.

D．Its leaves produce poisonous sand to drive the caterpillar away.

4.What would be the best title for this passage?

A．Plants and Animals                      B．How Plants Defend Themselves

C．Attacks and Defenses                    D．How Animals Eat Plant Leaves

BRITAIN is a popular tourist place．But tours of the country have advantages and disadvantages.

GOOD NEWS

Free museums．No charge for outstanding collections of art and antiquities（文物）.

Pop music．Britain is the only country to compare with the US on this score.

Black cabs．London taxi drivers know where they are going even if there are never

enough of them at weekends or night.

Choice of food．Visitors can find everything from Ethiopian to Swedish restaurants.

Fashion．Not only do fashion junkies love deeply and respect highly brand names

such as Vivienne Westwood, Alexander McQueen; street styles are justly loved, too.

BAD NEWS

Poor service．“It’s part of the image of the place．People can dine out on the rudeness they have experienced,” says Professor Tony Seaton, of Luton University’s International Tourism Research  Center.

Poor public transport．Trains and buses are promised to defeat the keenest tourists, although the overcrowded London tube is inexplicably (难以理解的) popular.

Rain．Still in the number one complaint.

No air-conditioning．So that even splendidly hot summers become as unbearable as the downpours.

Overpriced hotels．The only European country with a higher rate of tax on hotel rooms is Denmark.

Licensing hours．Alcohol (酒) is in short supply after 11 p.m. even in “24-hour cities”.

1.What do tourists complain most?

A．Poor service．                         B．Poor public transport.

C．Rain.                                 D．Overpriced hotels.

2.What do we learn about pop music in Britain and the US through this passage?

A．Pop music in Britain is better than that in the US.

B．Pop music in Britain is as good as that in the US.

C．Pop music in Britain is worse than that in the US.

D．Pop music in Britain is quite different from that in the US.

3.When are people not able to get alcohol?

A．At 12: 00 p.m.      B．At 10: 00 p.m.      C．At 11: 00 p.m.      D．At 9: 00 p.m.

4.Which of the following is TRUE according to the passage?

A．You have to pay to visit the museums．

B．It’s very cheap to travel by taxi there.

C．You cannot find Chinese food there．

D．The public transport is poor there.

SEE a cell phone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hit­ting "print" on your computer.

You might find it hard to believe that you could actually "print" an object like you would a picture. But it is not that hard to under­stand how it would work. Just as a traditional printer sprays (喷) ink onto paper line by line, modern 3-D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.

Instead of ink, the materials the 3-D printer uses are mainly plastic, resin (树脂)and certain metals. The thinner each layer is --- from a millimeter to less than the width of a hair ---  the smoother and finer the object will be.

This may sound like a completely new technology, but the truth is that 3-D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.

Last year, though, saw a big change in the 3-D printing industry--- printers became much cheaper. For example, 10 years ago a desktop 3-D printer might have cost £20,000 (200,000 yuan), while now they cost only about £ 1,000, according to the BBC.

Taken out of the factory and in­troduced to more diverse and com­mon uses, 3-D printing can create just about anything you can think of ---flutes (笛子), bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell Univer­sity in New York have just made an artificial ear using a 3-D printer, accord­ing to Science Daily. The fake ear looks and acts exactly like a natural one.

However, as 3-D printing becomes more commonplace, it may bring about certain problems --- such as piracy. "Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3-D printer, who will visit a retail (零售的) store again?" an expert in 3-D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3-D printer to print out a fully functioning gun?

1.According to the article, in the future, the 3-D printing technology will ___.

A．enable people to make better purchases online

B．be applied as widely in our daily lives as computers

C．change the way we make many products

D．shorten the time it takes for people to get what they buy online

2.What was the big event happening in the 3-D printing industry last year?

A．The 3-D printing technology was taken out ofthe factory.

B．The 3-D printer became more affordable forconsumers.

C．The 3-D printer was used for medical treatmentfor the first time.

D．3-D printing technology began to be used invarious fields.

3.How is the last paragraph developed?

A．By analyzing a cause and an effect.          B．By making comparisons.

C．By giving examples.                      D．By presenting research findings.

4.What is the best title of the passage?

A．Printing out everything                   B．Technology in the future

C．Online shopping disappearing              D．Great demand for 3-D printers