问题
选择题
下列关于胆汁的叙述正确的是（）
A．胆汁具有消化脂肪的作用
B．胆汁中有脂肪酶
C．胆汁对脂肪具有乳化作用
D．胆汁是由胆囊分泌的
答案
答案：C
本题考查的是胆汁。肝脏分泌胆汁．肝脏分泌的胆汁储存在胆囊中，通过胆管流入小肠，胆汁中不含消化酶，但胆汁对脂肪有乳化作用，能把脂肪变成微小颗粒，增加了脂肪与消化酶的接触面积，从而有利于脂肪的消化。
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下列关于胆汁的叙述正确的是（）
A．胆汁具有消化脂肪的作用
B．胆汁中有脂肪酶
C．胆汁对脂肪具有乳化作用
D．胆汁是由胆囊分泌的
答案：C
本题考查的是胆汁。肝脏分泌胆汁．肝脏分泌的胆汁储存在胆囊中，通过胆管流入小肠，胆汁中不含消化酶，但胆汁对脂肪有乳化作用，能把脂肪变成微小颗粒，增加了脂肪与消化酶的接触面积，从而有利于脂肪的消化。
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| A group of graduates, highly established in their careers, got together to visit their old university professor. They talked about the present-day 1 topic-Happiness. But the conversation soon turned into complaints about 2 in work and in life. To offer his guests coffee, the professor went to the kitchen and 3 with a large pot of coffee and different types of 4 -plastic, glass, crystal, some nice-looking, some plain-looking, some expensive, some cheap-telling them to help 5 to the coffee. 6 all the students had a cup of coffee in hand, the professor said, "If you 7 , you might find all the nice-looking, expensive cups are taken up, with the plain and cheap ones 8 . While it is 9 for you to want only the best for yourselves, that is the source of your 10 and stress. In fact, the cup itself adds no 11 to the coffee. What all of you 12 wanted was coffee, not the cup, but you consciously went for the best cups and were 13 each other's cups." "Now 14 this: Life is the coffee and the jobs, money and position in 15 are the cups. They are just tools to 16 and contain life, and the types of cups do not decide or 17 the quality of life we live. Sometimes, focusing on the cup makes us 18 to enjoy the coffee itself. So, don't let the cups drive you. Enjoy the coffee 19 ." The 20 people don't have the best of everything. They just make the best of everything. | ||||
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