问题
单项选择题 B型题
良性前列腺增生，术后气囊导管的拔除时间是术后的（）
A.7天内
B.10天
C.14天
D.2～3天
E.7天
答案
参考答案：B
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良性前列腺增生，术后气囊导管的拔除时间是术后的（）
A.7天内
B.10天
C.14天
D.2～3天
E.7天
参考答案：B
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| "This Friday we'll have the yearly Egg Drop Challenge," said our science teacher,Mr Baker. "You can work alone or with a partner. " My friend,Cassie,and I smiled at each other. We always worked on projects 1 . The 2 of the challenge was simple-to build a protective container to keep an egg from breaking when 3 the stadium wall. I made my sandwich that afternoon while waiting for Cassie. 4 the butter-cream gave me an idea. "1 have a brilliant design for our 5 container!"I said when Cassie arrived. "We can 6 the egg with some butter-cream. " "Why not pit the egg in a basket with a parachute(降落伞) 7 ," Cassie rolled her eyes. "The parachute is better than that stupid idea. " I couldn't believe it. Of course we'd had our little 8 in the past,but she'd never called any of my ideas " 9 " before. "Then I'll build mine and you build yours ! " 10 words had been out,our friendship was challenged. When Friday finally arrived,I had to 11 Cassie's Egg Force One looked pretty good. 12 , my Egg-cellent Egg Cream didn't look quite scientific. We kids carried our containers up three stadium steps and dropped them over the side wall. Those whose eggs broke were out;those whose eggs survived 13 three more steps and dropped them again. This would go on till the last egg broke. After four rounds,only Cassie and I were 14 . I let go of my box. I heard someone say "ew" after seconds.Had my egg broken? I raced down the 15 . The side walk was dotted with egg shells(蛋壳) from those 16 drops. Finally I found my little Egg-cellent Egg Cream. "That looks like egg drop soup,Laura," Cassie said. She was holding her Egg Force One. My 17 raced.Had she won? I looked at her basket. 18 . "My egg bounced 19 ,"she explained,pointing to a broken shell. " A tie (平局 ) , " Mr Baker said. Cassie looked at me,and her glare 20 . I laughed. She smiled… | ||||
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