The eighth chapter is exceedingly brief, and relates that Gibbons, the amateur naturalist of the district,     1     lying out on the spacious open downs without a soul     2     a couple of miles of him, as he thought, and almost dozing, heard close to him the sound as of a man coughing, sneezing, and     3     swearing savagely to himself; and looking, beheld nothing. Yet the voice was indisputable. It continued to swear with that breadth and variety     4     distinguishes the swearing of a cultivated man. It grew to a climax, diminished again, and died     5     in the distance, going     6     it seemed to him in the direction of Adderdean. It lifted to a spasmodic sneeze and ended. Gibbons had heard nothing of the morning’s occurrences,     7     the phenomenon was so striking and disturbing that his philosophical tranquillity vanished; he got up hastily, and hurried     8     the steepness of the hill towards the village, as fast as he could go.

Why do people read negative Internet comments and do other things that will obviously be painful'？Because humans have an inherent need to    1     uncertainty，according to a recent study in Psychological Science. The new research reveals that the need to know is so strong that people will seek to satisfy their curiosity even when it is clear the answer will hurt.

In a    2     of four experiments，behavioral scientists at the University of Chicago and the Wisconsin School of Business tested students' willingness to express themselves to unpleasant stimuli in an effort to satisfy curiosity. For one    3    ，each participant was shown a pile of pens that the researcher claimed were from a previous experiment The twist. Half of the pens would    4     an electric shock when clicked.

Twenty-seven students were told which pens were electrified；another twenty-seven were told only that some were electrified.When left alone in the room，the students who did not know which ones would shock them clicked more pens and incurred（遭受）more shocks than the students who knew what would happen.Subsequent experiments reproduced this effect with other stimuli，such as the sound of fingernails on a chalkboard and photographs of     5     insects.

The drive to discover is deeply    6    in humans，much the same as the basic drives for food or shelter，says Christopher Hsee of the University of Chicago. Curiosity is often considered a good instinct---it can lead to new scientific advances，for instance---but sometimes such    7     can backfire.The insight that curiosity can drive you to do self-     8     things is a profound one.

Unhealthy curiosity is possible to     9     , however. In a final experiment，participants who were encouraged to predict how they would feel after viewing an unpleasant picture were less likely to choose to see such an image.These results suggest that imagining the outcome of following through on one's curiosity ahead of time can help    10    whether it is worth the endeavor.“ Thinking about long-term consequences is key to reducing the possible negative effects of curiosity，" Hsee says. In other words，don't read online comments.

The Trunkster, a bag with built-in smart features might just challenge the standard roller bag. The main security feature: It's zipperless. A sliding roll top-door design allows for easy     1     by the owner, but reduces the risk of theft or accidental opening during baggage     2    . If airport security has to search the bag, there a TSA-approved combination lock. Need to juice up your phone? A     3     battery can charge portable devices through a USB connection. Perhaps the coolest part - especially if your holiday shopping habits put you at a risk of going beyond baggage weight     4     --- is a built-in digital scale. Want to know how much stuff you're pulling? Lift the bag and the display on the handle shows weight in pounds or kilograms.

Trunkster co-founder Jesse Potash said he and his co-founder, based in New York, created the luggage in 2014, after finding nothing they believed could     5     accessibility. They wanted to “completely     6    “ the classic case -- with zippers -- for “the modern, minimalist(极简的)traveler,” Potash says. He adds that they didn't want to       7     the user with “as many features as possible” because that would not be required.

One more feature you can add on? Tracking. Airlines are     8     doing a better job these days of not losing bags. But for those who want to track their cases there are stand-alone gadgets(精巧的装置) like the Trakdot or Pocket-Finder Luggage Tracker. For an extra $40, you can add a subscription-free, removable GPS to the Trunkster.

But smarting up a     9     object comes with a problem. “When you have this much technology in a suitcase ... there are more things to change,' says George Hobica, a world traveler. Besides, the Trunkster is all black, and we all know that finding a black-colored bag in a sea of suitcases is like searching for a blade of grass on a football field. Attention, luggage manufacturers looking to     10     the typical pattern: Go bolder with unusual colors and designs.