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【简答题】
Chilean rescued miner Edison Pena ran the New York City Marathon on November 7th , less than a month after he was rescued from a collapsed (坍塌的) mine that trapped him and the other 32 miners for 69 days. Pena ran 10 km daily through the mine’s tunnels (巷道) to beat the anxiety, wearing cut-down boots until rescuers sent him a pair of sports shoes through a narrow hole that served as the miners’ “lifeline” to the surface. “When I ran in the darkness, I was running for life,” Pena told a news conference in New York. “I was running to show that I wasn’t just waiting around. I also wanted God to see that I really wanted to live.” The miners were discovered alive on August 22---17 days after the mine collapsed, but it took many more days for rescuers to dig a hole big enough to bring them out. The New York Road Runners, which organizes the marathon, had invited Edison Pena to the event after hearing his story. They thought he could ride in the lead vehicle or hold the finish line tape, but Pena said last week he did not want to watch, he wanted to run. “I was very eager to take on this big challenge,” he said. “I wanted to show the world I could run.” He hoped to run the 26.2-mile race in about six hours. “I have a knee injury, but I am eager to cross the finish line,” he said. An Elvis Presley fan who asked rescuers to send the singer’s music down into the mine, Pena broke into song at the news conference with the Presley hit Return to Sender. On the morni ng of November 7 th , Pena, known as “the runner” by fellow miners trapped with him , set out to cover the course along with thousands of other runners and completed the race in five hours and 40 minutes. 小题1:When trapped underground, Pena ran a long way every day to _______. A.find a way to get out B.dig a lifeline to the ground C.keep himself from coldness D.get rid of his uneasy feelings 小题2: According to the passage, Pena _______. A.was not expected to run the marathon at first B.failed to achieve the goal he had set for the marathon C.wore sports shoes while working underground D.was asked to sing a Presley’s song at a news conference 小题3: During the rescue of the Chilean trapped miners, the digging of the escape hole lasted about _________. A.17 days B.22 days C.52 days D.69 days 小题4:Pena can be best described as _________. A.smart-minded B.strong-willed C.hard-working D.warm-hearted
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【多选题】问题性旅游故障通常发生在 ( ) 之间。
A.
领队与导游
B.
导游与旅行社
C.
游客与领队
D.
旅游者之间
E.
游客与接待单位
【单选题】植物细胞的质壁分离是指 [     ]
A.
细胞质和细胞壁分离
B.
原生质层和细胞壁分离
C.
细胞质和液泡膜分离
D.
细胞质和细胞膜分离
【单选题】>是歌剧( )中的著名唱段
A.
<>
B.
<>
C.
<>
D.
<>
【简答题】什么叫质壁分离现象?研究质壁分离有什么意义?
【单选题】观察紫色洋葱表皮细胞质壁分离和质壁分离复原实验中,证明质壁分离现象的是 (  )。
A.
液泡由小变大,紫色变浅            
B.
液泡由小变大,紫色变深
C.
液泡由大变小,紫色变浅            
D.
液泡由大变小,紫色变深
【多选题】饰面板(砖)工程应对下列哪些性能指标进行复验()
A.
室内用花岗岩石的放射性
B.
粘贴用水泥的凝结时间、安定性和抗压强度
C.
外墙陶瓷面砖的吸水率
D.
寒冷地区外墙陶瓷面砖的抗冻性
【多选题】饰面砖(板)工程应对下列哪些指标进行复验( )。
A.
室外用花岗岩的放射性
B.
粘贴用水泥的凝结时间、安定性和抗压强度
C.
外墙陶瓷面砖吸水率
D.
寒冷地区外墙陶瓷面砖的抗冻性
E.
内墙面砖的放射性
【简答题】质壁分离复原
【简答题】质壁分离(plasmolysis)
【单选题】下列关于质壁分离和质壁分离复原实验的叙述中,正确的是
A.
常选择质量浓度为 0.3g/mL 的葡萄糖溶液作质壁分离的试剂
B.
能发生质壁分离复原的细胞,说明其膜结构保持原有功能
C.
洋葱根尖分生区细胞也是观察质壁分离现象的理想材料
D.
发生质壁分离时,细胞壁和原生质层之间充满了清水
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