题目：
| Choose the best topic from A to F according to the meaning of each paragraph. ( ) 1. ◆Always dress properly and keep a smile on your face. ◆Try to be the first to greet a person. Be friendly. ◆Don't be shy, but be careful not to be over-enthusiastic (过分热情). ( ) 2. Recently, I listened to a speech given by Dr. Pausch. His speech told us how to lead our lives positively(积极地). He suffered from a serious disease. In his speech, he spoke about his childhood dreams and how he achieved his biggest childhood dreams. He asked people to have fun and live life to the fullest. I was deeply moved. ( ) 3. Two ancient Chinese relies(文物) were auetioned(怕卖) off last Wednesday in Paris. The buyer is said to be a businessman from Fujian, China. Though some ancient Chinese relics have returned to China, some are still missing. Many Chinese are very angry about this auction and they said these relics should have returned to their motherland without any excuse. ( ) 4. A study from the School Nutrition Association in the USA shows that cool names can make for cool foods. Scientists think giving a food a fun name makes kids think it will be more fun to eat. They did experiments. The results proved what they thought was quite true. ( ) 5. For American basketball player Kevin Durant, life as a shining star has just begun. As is known to all, his success may lie in his untiring struggle. There is no doubt that his experience may remind us of the old saying "No pains, no gains". And everyone, keep moving and just do it. | |
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答案：
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答案：A题目分析：淀粉进行化学性消化的起点是口腔，初步分解成麦芽糖，进一步输送到小肠内，在消化酶的作用下分解为葡萄糖；蛋白质进行化学性消化的起点是胃，蛋白质在胃内进行初步消化，进一步推送到小肠，在酶...
