问题
单项选择题 A1型题
标记乳糖试验测定肠道转运时间的原理是（）。
A.乳糖可以在胃内被消化
B.乳糖被结肠细菌所发酵
C.乳糖不可以在胃内被消化
D.幽门螺杆菌含有尿素酶
E.胃内有蛋白酶
答案
参考答案：B
解析：乳糖被结肠细菌所发酵。
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标记乳糖试验测定肠道转运时间的原理是（）。
A.乳糖可以在胃内被消化
B.乳糖被结肠细菌所发酵
C.乳糖不可以在胃内被消化
D.幽门螺杆菌含有尿素酶
E.胃内有蛋白酶
参考答案：B
解析：乳糖被结肠细菌所发酵。
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| After years of searching, the seeker was told to go to a cave, in which there was a well. "Ask the well what is 1 ", he was advised. Having 2 the well, the seeker asked the question. From the 3 came the answer: "Go to the village crossroad: there you shall find what you are 4 ." The man ran to the crossroad, only to find three rather small 5 . One was selling pieces of metal, another sold wood, and thin wires were for sale in the third. 6 seemed to have much to do with the truth. Disappointed, the seeker returned to the well to 7 an explanation, but he was told only: "You will 8 in the future." Angry about having been made fool of, the seeker 9 his wanderings in search of truth. As years went by, the 10 of his experience at the well 11 faded until one night, while he was walking in the moonlight, the sound of sitar (一种弦乐器) music 12 his heart. It was wonderful and it was played with great 13 . Deeply moved, the truth seeker felt drawn towards the player. He looked at the fingers dancing over the strings. He became 14 of the sitar itself. And then 15 he let out a cry of joyful recognition: the sitar was made out of wires and pieces of metal and wood just like those he had 16 seen in the three stores and had thought them to be without any particular significance. At last he understood the 17 of the well: we've already been given everything we need: our 18 is to assemble (装配) and use it in the proper way. Nothing is meaningful so long as we 19 only separate parts. But as soon as the parts 20 , a new entity (实体) will form. | ||||
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