Green is not always referring to the color. In some cases, it is the term used for environmental{#blank#}1{#/blank#}(friend). If you've been expecting to replace your furniture, consider {#blank#}2{#/blank#}(go) green because green furniture offers many benefits. Here are a few tips to get you started on your hunt for the perfect eco-friendly furniture.

    First, green furniture isn't harmful{#blank#}3{#/blank#}your health. Also its making process doesn't cause damage to the environment in any way. Besides, by using eco-friendly {#blank#}4{#/blank#}(product), you prevent global warming to some degree in your own way.

    The materials{#blank#}5{#/blank#}are used in furniture are what make them green. Materials can be good for the environment {#blank#}6{#/blank#} because they are renewable resources or they are all {#blank#}7{#/blank#}(nature). A lack of chemicals in furniture also{#blank#}8{#/blank#}(mean) it is a better choice for the environment. It may be hard to imagine that a sofa or a table could actually be{#blank#}9{#/blank#}green product, but they really can be depending on what they {#blank#}10{#/blank#}(make)of.

    Therefore, when you want to hunt for the perfect green furniture, you should choose the green materials.

    Folk music includes many musical variations over the centuries. This form of music is{#blank#}1{#/blank#} (energy) in English-speaking countries.

    In the 1960s, folk music{#blank#}2{#/blank#} (become) very popular thanks to artists like US song-writer Bob Dylan and Canadian singer Leonard Cohen. At that time, folk music used traditional instruments and had lyrics（歌词）that focused on social issues such as poverty and war. The power of folk music was {#blank#}3{#/blank#} big as to inspire political and artistic movements. One of Dedylan's famous songs, Blowin'in the Wind{#blank#}4{#/blank#} (honor) as an “all-purpose progressive anthem (圣歌）” and it suggested {#blank#}5{#/blank#}some things would change. The song served{#blank#}6{#/blank#} the center of several protest movenments.

    Contemporary folk musicians still use traditional instruments and strong story-telling techniques{#blank#}7{#/blank#} (set) their tunes apart, but their lyrics are much less serious. And they have involved elements of other kinds of music.

    The British band Mumford& Sons is one of the most recent examples. When Mumford& Sons burst on the scene back in 2011 with their{#blank#}8{#/blank#} (one) performance in America, they were met with great enthusiasm. The media began to talk about “a new folk rock”.

    Their songs are rich in reference to the Bible and poets as well. Their music removes all politics and becomes an exercise in romantic{#blank#}9{#/blank#} (explain) for nice men with mandolins (曼陀铃）. And most {#blank#}10{#/blank#}(important), their songs are nice to listen to and sing along with.

    Overhead bridges are found in many parts of big cities, especially in place{#blank#}1{#/blank#} traffic is very heavy and crossing the road is dangerous. The purpose of these bridges{#blank#}2{#/blank#}(be) to enable pedestrians to cross roads{#blank#}3{#/blank#}(safe). Overhead bridges are used in very much the {#blank#}4{#/blank#}way as Zebra crossings. They are more efficient although{#blank#}5{#/blank#}little) convenient because people have to climb up a long flight of steps. This is{#blank#}6{#/blank#}(convenient) especially to older people. When pedestrians use an overhead bridge, they do not hold up traffic. However, when they cross a busy road using a zebra crossing, traffic is held up. This is why the government has built many overhead bridges{#blank#}7{#/blank#}(help) pedestrians and to keep traffic moving at the same time. For their own safety, pedestrians should be encouraged to use them instead of {#blank#}8{#/blank#}(risk) their lives by dashing across the road. Old people, however, may find it a little difficult climbing up and down the steps, but it is still much safer than walking across the road with all the danger of moving traffic. Overhead bridges serve a very useful purpose. Pedestrians, both old and young, should make{#blank#}9{#/blank#}a habit to use them. This will prevent unnecessary accidents and {#blank#}10{#/blank#}(lose) of life.

    Wherever you look these days something's looking back at you. There are video cameras on street {#blank#}1{#/blank#} (corner), vehicles and our own front doors.

    A Chicago company {#blank#}2{#/blank#} (call)Cooler Screens believes that you won't mind if they put cameras into the display cases (展柜) in stores. The cameras aren't placed there {#blank#}3{#/blank#} (prevent) you from stealing. Instead, they're part of a system that tries to guess {#blank#}4{#/blank#}you will buy next, based on how you look.

    The doors on the cases {#blank#}5{#/blank#} (be) video screens that show images of the goods, so a customer can see what's available inside. The screens also show vivid ads. They decide which ads to show by {#blank#}6{#/blank#} (study) video images of the customers.

    A camera feeds images of each customer into a computer {#blank#}7{#/blank#} guesses his or her sex and age. In addition, the system tracks {#blank#}8{#/blank#} (exact) where the customer is looking. Do the eyes come to rest {#blank#}9{#/blank#} a bottle of Red Bull, or does the shopper fancy Coca Cola? The Cooler Screens system instantly {#blank#}10{#/blank#} (analyze) all of this data, and then starts showing ads on the cooler door.

    We've all turned to sad music to make us feel {#blank#}1{#/blank#} (good)at some point in our lives, but why does doubling down on the sadness help drag us out of the mire(泥沼)？

    A new study sheds light on what's going on inside our brains {#blank#}2{#/blank#}we match our music to our feelings. It looks like sad music can be enjoyable -rather than {#blank#}3{#/blank#}(simple) depressing- because it triggers positive memories that can help to lift our mood. Psychologist Adrian North from Curtin University in Australia says there {#blank#}4{#/blank#} (be)two groups of possible{#blank#}5{#/blank#} (explain)for why we enjoy listening to sad music like this: one from social psychology, and one from cognitive neuroscience(认知神经学).

    In terms of social psychology, one way of {#blank#}6{#/blank#}(think) about this is that we feel much better about {#blank#}7{#/blank#} (we) if we focus on someone who's doing even worse, a process known as downward social comparison. Everything's going to be okay, because this person {#blank#}8{#/blank#}(have) an even worse day than you are.

    Another theory from social psychology is that people like to listen {#blank#}9{#/blank#} music that mirrors the tone of their current life circumstances -the songs act as {#blank#}10{#/blank#}sort of tuning fork(音叉) for our own situations and they resonate(共鸣) with us