阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

     One morning，I was waiting at the bus stop，worried about ____（be） late for school.There were many people waiting at the bus stop，____ some of them looked very anxious and____（disappoint）．When the bus finally came，we all hurried on board.I got a place next ____the window，so I had a good view of the sidewalk.A boy on a bike ____（catch） my attention.He was riding beside the bus and waving his arms.I heard a passenger behind me shouting to the driver，but he refused ____（stop） until we reached the next stop.Still，the boy kept ____（ride）．He was carrying something over his shoulder and shouting.Finally，when we came to the next stop，the boy ran up to the door of the bus.I heard an excited conversation.Then the driver stood up and asked，“____ anyone lose a suitcase at the last stop？”A woman on the bus shouted，“Oh dear！It's____（I）．”She pushed her way to the driver and took the suitcase thankfully.Everyone on the bus began talking about what the boy had done，and the crowd of strangers____（sudden） became friendly to one another.

“杏树”与“银杏树”只是一个字不同，但却不是一类植物，它们最主要的区别是（   ）

请同学们搭乘“化学地铁”一起畅游物质世界吧！如图所示，列车上的物质可与各站的对应物质发生一步进行的反应，方可驶向下一站。“2—5号站”各站的对应物质属于不同类别的纯净物。

阅读下文，回答相关问题。
      【甲】鱼，我所欲也；熊掌，亦我所欲也。二者不可得兼，舍鱼而取熊掌者也。生，亦我所欲也；义，亦我所欲也。二者不可得兼，舍生而取义者也。生亦我所欲，所欲有甚于生者，故不为苟得也；死亦我所恶，所恶有甚于死者，故患有所不避也。如使人之所欲莫甚于生，则凡可以得生者何不用也?使人之所恶莫甚于死者，则凡可以辟患者何不为也?由是则生而有不用也．由是则可以避患而有不为也。是故所欲有甚于生者,所恶有甚于死者 ．非独贤者有是心也，人皆有之，贤者能勿丧耳。
     【乙】天祥至潮阳，见弘范①，左右命之拜，不拜。弘范遂以客礼见之．与俱入涯山，使为书招张世杰。天祥曰：“吾不能扦②父母，乃教人叛父母，可乎?”索之固，乃书所过零丁洋诗与之。其末有云：“人生自古谁无死?留取丹心照汗青。”弘范笑而置之。涯山破，军中置酒大会。弘范曰：“国亡，丞相忠孝尽矣，能改心以事宋者事皇上，将不失为宰相也。”天祥泫然③出涕，曰：“国亡不能救，为人臣者死有余罪，况敢逃其死而二其心乎!”

      注：①弘范：元军元帅。②扦(hàn)：保卫。③泫(xuàn)然：水滴下的样子。

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