How can we reduce the risk?

    There are four general approaches to dealing with volcanic dangers. We can try to keep the danger from occurring - often an impossible task. We can try to change its path or reduce its impact on existing development. We can take steps to protect future development. We can also do our best to have disaster response plans in place before they are needed.

Removing the Threat

    Clearly, there is no way to stop an eruption. We can, however, attempt to reduce the eruption's effects by strengthening structures, for example, building protective works such as walls to make lava(熔岩) flow away from developed areas. Such efforts can be and have been successful, but are of limited use in a large-scale eruption.

Planning for the Future

    Protecting future development from volcanic dangers is a simple task. Before building houses, we should judge the risk. If the risk seems too great, a safer location should be found. This type of planning is very effective, but all too often, people are drawn to the lush(葱郁的)，rolling land of a quiet volcano.

Disaster Preparedness

    When a volcano comes to life, a few weeks may not be enough time to avoid a tragedy. Planning is the key to saving lives. Well before the warning signs occur, people must be educated about volcanic dangers. Escape plans must be in place. Communication between scientists, officials, the media, and the general public should be practiced. Emergency measures must be thought out and agreed upon.

    If you doubt the importance of these efforts, take another look at past volcanic tragedies, such as the eruption of Nevado del Ruiz. Communication failures left the town of Armero unprepared for escape. When a deadly mudflow came down the slope(斜坡), 21,000 people— 90 percent of the town's people--died.

    While money can't technically buy happiness, it can buy you a mood-lifting, outlook-improving vacation. Haven't made plan yet to skip town this winter? These money-saving travel tips can help you book the destination of your choice and enjoy you time there—without breaking the bank.

    1).FLY THE COOP FAST

    If you're planning to set off for an adventure right away, try the GTFO(Get The Flight Out) app. It lists the cheapest round-trip flights departing from your local airport that day or by the next morning. At press time, airfare was down 12 percent from last August and round-trip tickets for domestic flights averaged $218.

    2).SNAG A DISCOUNTED HOTEL ROOM

    If Airbnb, an online service that provide apartment exchange, isn't your style, reserve marked-down accommodations on Tingo, which lists almost all the rooms in more than 155,000 locations worldwide. After you book a price drop room, the site monitors rates until, typically, 24 to 48 hours before check-in. If the price drops, Tingo refunds you the difference.

    3).LIVE IT UP LOCALLY

    If you're planning a staycation(宅度假) this winter, try an affordable escape close to home. The free app HotelTonight offers lodging(租住) deals in more than 100 U.S. and Canadian cities and regions, and has a location-based feature that gives extea saving on already discounted prices on spots closest to you. Same-day prices fall even lower after 6 P.M.

    Is it wrong—either grammatically or in terms of style—to mix the simple past tense with the past perfect in one sentence? To give an example, the following seems a bit heavy and awkward to me: "There had been a time when she had been happier.' I prefer: 'There had been a time when she was happier.' Any thoughts?

—ALEX

I think the second version is the correct one—it's shorter and clearer. Rather than focusing on tenses, focus on the clean, short sentence. If something seems heavy and awkward to you, the writer—then it probably is. Always short sentences.

—DIANA

    I have constructed texts for a range of children's picture books all based on working profession: bus driver, postman, footballer, cleaner, teacher, policeman to list a few. I've listed about thirty professions so far. I thought of titling them as Mr Bus Driver, Mr Postman and so on. Would I be infringing (侵权) the Mr Men titles if I did or should I think of something else?

—RAJIV

    The Mr Men stories are based on characteristics, not on jobs—Mr Lazy, Mr Noisy, etc—so they bear no relation to your projects. However, you will come under fire from gender equality supporters—every job you list could equally be done by a woman. No teacher and few parents would find work useful if it implies that all professions are open only to men. I advise you to look at modern children's books in a library or bookshop.

—DIANA

    The light from the campfire brightened the darkness, but it could not prevent the damp cold of Dennis's Swamp (沼泽地) creeping into their bones. It was a strange place. Martin and Tom wished that they had not accepted Jack's dare. They liked camping, but not near this swamp.

    "So," Martin asked as they sat watching the hot coals. "How did this place get its name?"

    "Are you sure you want to hear it? It's a scary story," warned Jack.

    "Of course!" cried out Tom. "If there were anything to be scared of, you wouldn't have chosen this place!"

    "Ok, but don't say I didn't warn you," said Jack, and he began this tale.

    "Way back in time, a man called Dennis tried to start a farm here. He built that cottage over there to live in. In those days, the area looked quite different—it was covered with tall trees and the swamp was a crystal-clear river. After three hard years, Dennis had cleared several fields and planted crops. He was so proud of his success that he refused to listen to advice.

    "'You are clearing too much land,' warned one old man. 'The land is a living thing. It will hit back at you if you abuse it. '"

    "'Silly fool,' said Dennis to himself. 'If I clear more land, I can grow more crops. I'll become wealthier. He's just jealous!'"

    "Dennis continued to chop down trees. Small animals that relied on them for food and shelter were destroyed. He was so eager to expand his farm that he did not notice the river flowing slowly towards his door. He did not notice salt seeping to the surface of the land. He did not notice swamp plants choking all the native plants."

    "What happened?" Martin asked. It was growing colder. He trembled, twisting his body closer to the fire.

    "The land hit back—just as the old man warned," Jack shrugged. "Dennis disappeared. Old folks around here believe that swamp plants moved up from the river and dragged him underwater. His body was never found."

    "What a stupid story," laughed Tom. "Plants can't …" Before he had finished speaking, he screamed and fainted (晕倒). The other two boys jumped up with fright, staring at Tom. Suddenly, they burst out laughing. Some green swamp ivy (常春藤) had covered Tom's face. It was a while before Tom could appreciate the joke.

When Juni Stefanus Santoso from Indonesia rode a camel in a desert in Dunhuang, Gansu Province — an important cultural center on the Silk Road {#blank#}1{#/blank#} cultures from the East and the West met and mixed hundreds of years ago — he felt like he was "stepping into another world" that was foreign, and very different from his previous {#blank#}2{#/blank#} (impress) of China. 

On a four-day trip to Dunhuang in late April, Santoso, together with other foreign students, mostly from nations along the Silk Road, {#blank#}3{#/blank#} (be ) on a cultural journey to explore the desert landscape, to visit the local museum, the Mogao Caves and craftsmen, {#blank#}4{#/blank#} to communicate with students from the Dunhuang College of Northwest Normal University. All of these activities offered the 23-year-old Indonesian an impressive experience, {#blank#}5{#/blank#} which he could learn the culture of ancient China. 

"It was so {#blank#}6{#/blank#} (amaze). It's like another side of the country," says Santoso. Before he came to China, he thought it was a country full of technology-related companies — an impression that was supported by the fast and convenient technology- {#blank#}7{#/blank#} (drive) services that came to be a part of his daily life when he moved to Tianjin. 

"I was impressed by China's science and technologies before coming to China. You can do everything on your phone," says Santoso, {#blank#}8{#/blank#} (refer) to services like electronic payment and online shopping. 

The cultural trip, however, showed Santoso a view of China {#blank#}9{#/blank#} art and goods were transported along the Silk Road more than a thousand years ago. The young man said he {#blank#}10{#/blank#} (teach) a little bit about the Silk Road in his middle school history class. 

It is getting hot. It's time to put on 1 clothes and open up the windows.

Yesterday brought a(n) 2 visit to the kitchen during the brief time we were out. Two daring sparrows had 3 into a dangerous territory—our kitchen.

When you come across such sudden callers, you are 4 to sense it as an action of intruding (入侵) into your comfort zone, or you might 5 it as a lovely shining moment of life. We 6 —the second option, with no hesitation. After all, we've never stopped feeling urgent to strengthen the relationship with our sparrows more and more each day.

We can't stop 7 and celebrating their dance from our window. We fed them with the 8 on our tablecloth after every meal. And we have 9 them with every kind of bases and stands on our terrace (露台).

10 , they feel at ease in our backyard. And that has led them to 11 courage to slip into our house. Perhaps because they have the feeling that we don't consider them 12 , but friendly neighbors, who only leave some wastes from time to time.

The presence of our dear sparrow holds magical consistency with real life. And we've been having lovely sparrows coming over lately, whose presence 13 us out of our dull daily routines and shows us the hidden beauty and charm.

Like different human beings, these sparrows often take different forms. We've met sparrows like those, of all shapes and colors. And they're everywhere. Perhaps all of them are willing to call our 14 making us know they are there. They only ask from us not to be afraid of them or feel uneasy to their 15 .