8.People,like all living things,need food.Food gives us the nutrients our bodies need.(36)AEnergy is needed to carry out the life processes.
Our bodies cannot use the nutrients or energy in food unless the food is changed.The changing of food into a form the body can use is called digestion.
What does digestion do?(37)E Digestion also changes the chemicals of food.It changes large,complex food molecules (微粒) into smaller,simpler ones.
 (38)C Digestion takes place in the digestive tract.The digestive tract is a long,winding tube in your body.If stretched out,the digestive tract would be more than 9 meters (30 feet) long.
What are the parts of the digestive tract?The parts of the digestive tract are:the mouth,the foodpipe,the stomach,the small intestine(腸),and the large intestine
There are many organs along the digestive tracts,such as the liver.(39)F The digestive tract and the other digestive organs make up your digestive system.
Food enters the body through the mouth.Waste materials (undigested food) leave the body through the anus(肛門(mén)).The anus is at the end of the large intestine.
Digestion is a step-by-step process.(40)B It takes food from one to two days to pass through the entire digestive tract.

A.It also gives us energy.
B.It does not take place quickly.
C.Where does digestion take place?
D.Does the food also give us much strength?
E.Digestion breaks down large pieces of food into smaller pieces.
F.These organs are not part of the digestive tract,but they help in digestion.
G.Although they don't belong to the digestive tract,they help us fight diseases.

分析 本文屬于說(shuō)明文閱讀,作者通過(guò)這篇文章主要向我們描述了消化這種生理過(guò)程的地點(diǎn),器官,作用等.

解答 36.A.推理判斷題.根據(jù)前文Food gives us the nutrients our bodies need可知食物不僅給我們營(yíng)養(yǎng)還給我們能量;故選A.
37.E.推理判斷題.根據(jù)后文It changes large,complex food molecules (微粒) into smaller,simpler ones可知消化是把大塊食物分解成小塊;故選E.
38.C.推理判斷題.根據(jù)后文Digestion takes place in the digestive tract.The digestive tract is a long,winding tube in your body可知提出疑問(wèn)消化在哪里發(fā)生?故選C.
39.F.推理判斷題.根據(jù)后文The digestive tract and the other digestive organs make up your digestive system可知這些器官不是消化道的一部分,但有助消化;故選F.
40.B.推理判斷題.根據(jù)前文Digestion is a step-by-step process可知消化是一個(gè)循序漸進(jìn)的過(guò)程,不是迅速發(fā)生的;故選B.

點(diǎn)評(píng) 七選五閱讀是完成性閱讀,和完形填空很類似,不同的是一個(gè)選詞,一個(gè)選句子.解題時(shí),要注意上下文語(yǔ)境,充分考慮信息詞(選項(xiàng)中和空格前后句子中相同或相近的詞),選出最符合語(yǔ)境的句子.

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