20．Fruit or juice，which is nutritionally superior？This is almost the same as the age-old question：The chicken or the egg，which came first？
Usually，juicers remove the juice and some pulp （果肉） from fruits and/or vegetables．It takes a lot of fruit to make a container of juice．We do get all of the vitamins，minerals，beneficial plant chemicals and carbohydrates in juice out of a whole fruit．But we do not get much of the fiber，the part that aids our digestive process，fills us up，and may help protect us against heart diseases and certain cancers．
However，you may be surprised to discover that some juices actually contain more necessary nutrients （营养）．For example，apples are not a good source of vitamin C，but many types of apple juice are fortified with vitamin C．
Juice has more calories than fresh fruit due to added sugar and less fiber．If calories are your primary concern，choose fresh fruit over juice and drink water if you are thirsty．We do not feel as filled up from juice because it does not contain any fiber．For many people，drinking a caloric beverage （饮料），such as juice，is not as satisfying as eating the same amount of calories in food．For those of us who need to increase caloric intake （such as athletes，children，or teens） juice is a GREAT choice．
Kids love the taste of pure fruit juice，and parents love it because it is a healthy source of nutrients．But avoid junk fruit beverages which are mistaken for juice blends that contain various fruits like grape，apple and pear．These juices do not have the natural levels of vital nutrients that 100percent pure juices like orange juice provide．
39．According to the passage，you'd better haveA to help prevent heart disease．
A．fruitB．juiceC．calories D．minerals
40．What can we learn from this passage？
A．We can get out of fruit all the nutrients which aid our digestive process．
B．We can hardly determine which provides more nutrients，juice or fruit．
C．People may prefer juice to food in taking in the same amount of calories．
D．If you want more calories，fruit might be your better choice．
41．The underlined word"blends"in Paragraph5probably means"C"．
A．containersB．productsC．mixtures D．substitutes
42．The author writes the passage mainlyD．
A．to help people learn more about fruit and juice
B．to call on people to drink more juice
C．to remind people of negative effects of juice
D．to persuade people to avoid junk juice containing various fruits．
分析 本文是一篇科普类阅读，主要讲述了果汁和水果相比，它的优点和缺点．果汁虽然是由许多水果制成的，含有许多维生素，矿物质和碳水化合物，但是我们从中得不到纤维素，并且许多果汁不含自然的营养成分．
解答 39．答案：A．推理判断题．根据"It takes a lot of fruit to make a container of juice．We do get all of the vitamins，minerals，beneficial plant chemicals and carbohydrates in juice out of a whole fruit．But we do not get much of the fiber，the part that aids our digestive process，fills us up，and may help protect us against heart diseases and certain cancers"可知，虽然果汁是由许多水果制成的，含有许多维生素，矿物质和碳水化合物，但是我们从中得不到纤维素．故可以推测出，吃水果可以防止心脏病，癌症的发生．故选A．
40．答案：A．细节理解题．根据"But we do not get much of the fiber，the part that aids our digestive process"可知，水果中含有纤维素，可以帮助消化．故选A．
41．答案：C．词意猜测题．根据"But avoid junk fruit beverages which are mistaken for juice blends that contain various fruits like grape，apple and pear"可推测出，blens是混合物的意思．故选C．
42．答案：D．主旨大意题．根据全文内容，尤其是"But avoid junk fruit beverages which are mistaken for juice blends that contain various fruits like grape，apple and pear．These juices do not have the natural levels of vital nutrients that 100percent pure juices like orange juice provide"可知，作者写这篇文章的目的是劝说人们不要喝垃圾果汁．故选D．
点评 本文是一篇科普类阅读，题目涉及推理判断题，细节理解题，词意猜测题，主旨大意题，做题时应结合文章上下文内容并根据所给选项的含义进行分析，从而得出正确答案．切记胡乱猜测，一定要做到有理有据．
