题目

从海带中提取碘要经过灼烧、浸取、过滤、氧化、萃取、分液、蒸馏等操作，下列对应的装置合理、操作规范的是（） A . B . C . D . 答案：DIt was my first year teaching in a special class, and I wasn’t sure what to expect at our yearly Special Olympics sports meeting. My       had some challenges, from learning disabilities to cerebral palsy (脑瘫). Mark was one with the latter. Restricted to a      , he had to fight his spasms (抽搐) just to control his movements.    , he always had a positive attitude and greeted everyone with a huge smile. His classmates       him and always took the time to make sure he was included in group activities, especially Mike, Andy and Lucas, three boys who were good at   ­­    . Obviously, Mark wanted to be like them, unrestricted by the limitation of his      , and watching them moving on the playing field seemed to fill him with      . When the day came, Mike, Andy and Lucas placed well in their sports events, and gave the calm audience something to cheer about. Mark sat in his wheelchair on the sidelines,       them on. The final event of the day was the 400-meter race.       was invited to either walk or run, according to their ability, around the       length of the track. When Mike, Andy and Lucas reached the finish line, they       and turned to look behind them. At the       of the crowd on the track, determined not to be left behind, was Mark. All his classmates had      him. He was alone on the track with over half the distance left to       . Mike, Andy and Lucas looked at each other, and a silent       passed between them. Slowly, they jogged       towards their friend, cheering him on       he had done for them moments before.The progress was      , but in the end the three star runners and Mark       the finish line together to the enthusiastic cries of their teachers and classmates. Seeing the look on Mark’s face and hands upraised, I came to understand what       the Special Olympics. Years later, I’m still cheering them on. 小题1:A．students B．friends C．partnersD．classmates小题2:A．bed B．machine C．deskD．wheelchair小题3:A．ThusB．HoweverC．Otherwise D．Besides小题4:A．protectedB．satisfied C．loved D．cared小题5:A．expressionB．practice C．studiesD．sports小题6:A．interests B．habitsC．body D．mind小题7:A．trustB．admiration C．fearD．worry小题8:A．bringingB．cheering C．holding D．moving小题9:A．Someone B．EveryoneC．Anybody D．Nobody小题10:A．averageB．different C．entire D．extra小题11:A．fellB．restedC．hurried D．paused小题12:A．endB．front C．centerD．top小题13:A．leftB．ignoredC．passed D．helped小题14:A．runB．jogC．cover D．walk小题15:A．demand B．relief C．action D．thought小题16:A．back B．along C．again D．on小题17:A．whileB．although C．sinceD．as小题18:A．slowB．greatC．boringD．relaxing小题19:A．crossed B．arrived C．rushed D．got小题20:A．leftB．madeC．kept D．found