Fresh fruit juice has become increasingly popular in many diets - especially among those consumers who are pressed for time and concerned about their health.Fruit juice has also been linked to beliefs that it can help people lose weight.But is juicing really as healthy as we think？
    A recent study reveals hard truths about fruit juice.
   All fruits contain sugars and don't seem to have harmful effects unless they contribute to excess（過量的）daily calories.This is because the fiber which is found in whole fruit is undamaged，and the sugar is contained within the fruit's cells.It takes our digestive system a while to break these cells down and for sugar to enter the bloodstream.
   This is not the case with fruit juice.Different from whole fruit，the natural sugar in fruit juice counts as "free sugars"，just like honey and added sugars.With the fiber removed，fruit juice's sugar is absorbed more quickly.A sudden rise of blood sugar causes the pancreas（胰腺）to release insulin（胰島素）to bring it back down to a normal level.Over time，this system can wear out，increasing the risk of developing type-2 diabetes（糖尿?。?
   In 2013，after analysing the health data of 100，000 people collected between 1986 and 2009，researchers found that fruit juice consumption was linked with increased risk of type-2 diabetes.They've concluded that even when fruit juice is similar in the nutritional content to whole fruit，fruit juice leads to faster and larger changes in insulin levels since liquids pass through the stomach faster than solids.
   "Although fruit juice is better than no fruit at all，there are lots of limits，" said Dr.Amy Smith，professor of medicine at the University of Virginia."It particularly comes with risks when we consume more than I50 ml of free sugars per day，or when it puts us over our recommended calorie intake.It provides us with vitamins - but fruit juice is far from a quick fix"

（1）What leads to the increasing fruit juice popularity？
A．Experts' recommendation.
B．Its obvious medical effects.
C．Its assumed benefits to health.
D．People's improved life quality.
（2）Why is whole fruit healthier？
A．It provides better nutrition.
B．Its fiber slows sugar absorption.
C．It protects our digestive system.
D．Its fiber helps remove extra sugar.
（3）Ho w did researchers draw the conclusion in 2013？
A．By observing the blood sugar level.
B．By comparing liquid and solid intake.
C．By analysing previously collected data.
D．By interviewing type-2 diabetes patients
（4）What is Dr.Smith's attitude to fruit juice？
A．Positive.
B．Negative.
C．Objective.
D．Unclear.

【考點】說明文．

【答案】C；B；C；B