Many of us have found ourselves trying to explain to friends and colleagues, “No, business travel isn’t as fun and fascinating as it seems.” Finally, there could be proof to___51___ this up. Researchers at the University of Surrey, in Britain, and Linnaeus University, in Sweden, have published a new study highlighting what they call “a ___52___ side of hypermobility(常飞行)”.

The study, which combines existing research on the effects of frequent travel, finds three types of consequence: physiological, psychological and emotional, and social. The physiological ones are the most obvious. Jet ___53___ is the suffering travellers know best, although they may not foresee some of its more terrible potential effects, like speeding ageing or increasing the risk of heart attack and stroke. Then there’s the danger of deep-vein thrombosis(深静脉血栓), ___54___ to germs and radiation. And finally, of course, business travellers tend to get less exercise and eat less healthily than people who stay ___55____

The psychological and emotional damage of business travel is more abstract, but just as real. Frequent flyers experience “travel disorientation” from changing places and time zones so often. They also suffer___56___ stress, given that “time spent travelling will rarely be balanced through a reduced workload, and that there may be anxieties associated with work continuing to pile up while being away”. Due to the ___57___ from family and friends, “hypermobility is frequently a/an isolating experience,” the authors write. The accumulated impact can be astonishing and great.

Finally, there are the social effects. Marriages suffer from the time apart, as does children’s behaviour. What is more, relationships tend to become more unequal, as the partner who stays at home is forced to take on more ___58___ duties. There’s a gender inequality here, since most business travellers are men. Friendships also suffer, as business travellers often “sacrifice local collective activities and instead ___59___ their immediate families when returning from trips”.

Of course, these impacts are moderated by the fact that they fall disproportionately on a small part of the population that is already doing rather well. The “mobile elite(精英)” tend to have higher incomes and access to better health care than the population___60___

So these may be problems of the 1% (or the 3%, or the 5%). But they’re real enough regardless. By all means feel jealous of acquaintances' Instagram photos of exotic meals and faraway attractions. But harbour a small amount of concern as well.

 D    AC   A    ABC  BD //    CD     C    AD   AB    B