Want to figure out if someone is a psychopath (精神变态者)? Ask them what their favourite song is. A New York University study last year found that people who loved Eminem's Lose Yourself and Justin Bieber's What Do You Mean? were more likely to {#blank#}1{#/blank#} highly on the psychopathy scale than people who were into Dire Straits.

    Over the past few years, Spotify has been enhancing its data analytic {#blank#}2{#/blank#} in an attempt to help marketers {#blank#}3{#/blank#} consumers with adverts tailored to the mood they're in. They infer this from the sort of music you're listening to, {#blank#}4{#/blank#} with where and when you're listening to it, along with third-party data that might be available.

    Now, to be clear, there's nothing particularly {#blank#}5{#/blank#} about what Spotify is doing with your data. I certainly don't think that they are working with shadowy consulting firms to serve you ads promoting a culture war while you're listening to the songs that {#blank#}6{#/blank#} you might be in a casually racist mood. Nevertheless, I find it {#blank#}7{#/blank#}that our personal private moments with music are increasingly being turned into data points and sold to advertisers.

    You can see where this could go, can't you? As ad targeting gets ever more complicated, marketers will have the ability to target our emotions in {#blank#}8{#/blank#} exploitative ways. According to one study, titled Misery Is Not Miserly, you are more likely to spend more on a {#blank#}9{#/blank#} if you're feeling sad. You can imagine some companies might take advantage of that. And on that note, I'm feeling a little down about all this. I'll {#blank#}10{#/blank#} off to treat myself to something expensive.

    Eco-tourism involves people travelling to beautiful but environmental sensitive place. Such trips are usually carried out with a(n) {#blank#}1{#/blank#} guide. Over recent years  this type of travel has been steadily gaining {#blank#}2{#/blank#} as more people search for new travel experiences.

    It is obvious that eco-tourism is beneficial in many aspects. First, all the money spent by the tourists is used to {#blank#}3{#/blank#} the important environmental spots they visit. Second, it helps visitors to better understand the environment, which is sure to {#blank#}4{#/blank#} their knowledge of the world. Furthermore, this style of travel is also more {#blank#}5{#/blank#} of the local culture.

    Compared to normal tourists, eco-tourist use energy more {#blank#}6{#/blank#}, save water and produce less rubbish by finding ways to recycle it. These behaviors have a(n) {#blank#}7{#/blank#} and lasting effect on the local environment.

    Two things are needed to make eco-tourism a success. First, it should be done in small groups. And second, because it requires {#blank#}8{#/blank#} effort, both eco-tourists and locals must be sincere in their devotion to improving the environment.

    Green travel provides local people with jobs in parks, hotels and shops. One great achievement of eco-tourism has been the {#blank#}9{#/blank#} of illegal hunting. Former hunters can now work as guides to help keep the animals safe in their natural surroundings.

Peru is one country using eco-tourism to promote respect for the environment. It's not able to take better care of its rainforests because of {#blank#}10{#/blank#} on more sustainable travel.

    In addition to this, local people's living-standards have improved. Many others are now following Peru's example and using eco-tourism to preserve their environment for the future generations.