备战2018年高考阅读理解每日一练（29）

D

A warm drink of milkbefore bed has long been the best choice for those wanting a good night'ssleep. But now a study has found it really does help people nod off—if it ismilked from a cow at night.

  Researchers have discovered that“night milk” contains more melatonin(褪黑激素), which has been proven tohelp people feel sleepy and reduce anxiety.

  The study, by researchersfrom Seoul, South Korea, involved mice being fed with dried milk powder madefrom cows milked both during the day and at night.

  Those given night milk, whichcontained 10 times the amount of melatonin, were less active and less anxiousthan those fed with the milk collected during daytime, according to the studypublished inThe Journal of MedicinalFood.

   Night milk quickened the startof sleep and caused the mice to sleep longer.

   While the effect of cowsmilk harvested at different time has not been tested on humans up to now,taking melatonin drugs has been suggested to those who are struggling to fallasleep at night.

   Previous studies have alsoindicated that milk can be excellent for helping sleep because of the calciumcontent, which helps people to relax.

  Milk is also sugar-free andadditive-free with nutritionists recommending skimmed milk as the best choicebefore bed as it is the least fattening. The more fat you take in beforebedtime, the greater burden you will put on your body at night.

C

    In the depths of theFrench Guianese rainforest, there still remain unusual groups of indigenous(土著的) people.Surprisingly, these people live largely by their own laws and their own socialcustoms. And yet, people in this area are in fact French citizens because ithas been a colony(殖民地) of the French Republic since 1946. In theory, they shouldlive by the French law is often ignored or unknown, thus making them into aninteresting area of “lawlessness” in the world.

The lives of thesepeople have finally been recorded thanks to the effects of a Frenchman formParis called Gin. Gin spent five months in early 2015 exploring the most remotecorners of this area, which sits on the edge of the Amazon rainforest, withhalf its population of only 250,000 living in its capital, Cayenne.

“I have a special lovefor the French Guianese people. I have worked there on and off for almost tenyears,” says Gin. “I've been able to keep firm friendships with them. Thus Ihave been allowed to gain access to their living environment. I don't see it asa lawless land. But rather I see it as an area of freedom.”

“I wanted to showthe audience a photographic record touching upon the uncivilized life,”continues Gin. “I prefer to work in black and white, which allows me to showdifferent specific worlds more clearly.”

His black-and-whitepictures present a world almost lost in time. These pictures show peopleseemingly pushed into a world that they were unprepared for. These localcitizens now have to balance their traditional self-supporting huntinglifestyle with the lifestyle offered by the modern French Republic, whichbrings withitnot only necessary state welfare, but also alcoholism,betrayal and even suicide.