题目

2020年7月31日，北斗三号全球卫星导航系统建成暨开通仪式在北京举行。习.平总书记出席仪式，铿锵有力地宣布：“北斗三号全球卫星导航系统正式开通！”回答下面小题。【1】建设独立自主的卫星导航系统，是党中央、国务院、中央军委作出的重大战略决策。从1994年国家布局北斗导航系统工程至今已有26个年头，400多家参研参建单位、30余万名科研人员，是他们不忘初心，用汗水和心血浇灌出“自主创新、开放融合、万众一心、追求卓越”的新时代Mark was walking home from school one day when he noticed the boy ahead of him had dropped all of the books. He was carrying, along with a baseball bat and several other things.        Mark  1   down and helped the boy pick up these articles.  2  they were going the same way, he helped to carry some of them for him. As they walked, Mark  3   the boy's name was Bill, that he  4  computer games, baseball and history, that he was having a lot of   5   with his other subjects and that he had just broken  6  with his girlfriend.        They arrived at Bill's home first and Mark was  7  in for a Coke and to watch some television. The afternoon passed  8   with a few laughs and some shared small talk. and then Mark went home. They  9  to see each other around school, had lunch together once or twice, and then both ended up from the same high school. Just three weeks before  10  , Bill asked Mark if they  11  talk. Bill  12  him of the day years ago when they had first met. "Do you  13  wonder why I was carrying so many things home that day?" asked Bill. "You see, I  14  out my locker  because I didn't want to leave a mess（脏乱） 15  anyone else. I had planned to run away and I was going home to  16  my things. But after we spent some time together  17   and laughing, I realized that  18   I had done that, I would have  19  a new friend and missed all the fun we would have together. So you see, Mark, when you picked up my books that day, you did a lot more. You  20  my life." 1．A．knelt                     B．sat                      C．lay                      D．fell 2．A．Although               B．After                   C．Since                  D．Until 3．A．realized                 B．discovered           C．said                    D．decided 4．A．played                   B．tried                    C．loved                  D．made 5．A．questions              B．ideas                   C．doubt                  D．trouble 6．A．out                       B．up                       C．off                      D．away 7．A．called                    B．helped                 C．allowed               D．invited 8．A．pleasantly              B．willingly              C．freely                  D．peacefully 9．A．agreed                  B．continued            C．forced                 D．offered 10．A．movement           B．graduation           C．separation            D．vacation 11．A．would                 B．should                 C．must                   D．could 12．A．demanded            B．removed              C．reminded             D．asked 13．A．usually                B．ever                    C．even                   D．never 14．A．checked              B．took                    C．put                     D．cleaned 15．A．over                    B．into                     C．for                      D．with 16．A．find                    B．pick                    C．hold                    D．pack 17．A．playing                B．talking                 C．reading                D．watching 18．A．before                 B．while                   C．if                        D．as 19．A．lost                     B．passed                 C．left                     D．forgotten 20．A．changed              B．recovered            C．improved             D．helped