亚洲是世界第一大洲，体现在（   ）

①面积最大   ②跨纬度最广

③跨经度最广     ④东西距离最长

⑤人口最多

人的生殖细胞、体细胞、受精卵中染色体的数目分别为

阅读下面短文, 从短文后各题所给的四个选项(A、B、C、D)中, 选出可以填入空白处的最佳选项。

    That summer,Luke had been my closest companion for five years.We get lots of1in our area during the summer season.Many forests are badly2by fire each year.That hot summer,not far from our shelter,a forest3 fire.It was July,and there had been a heat wave going on for three days.Luke rushed toward the forest where the fire was sending out a4heat.There was no longer any hope at that moment to wait for Luke to come back to the5. In fact,I was waiting for firefighters to tell me that he had6in the forest.Suddenly,a fireman burst into my office and7me that my log Luke had succeeded in saving four kittens who had been8by the flames.According to the fireman,Luke seized the kittens,one by one moving them to a9place.

    I immediately10the fireman to the forest to pick up the rescued kittens.11we got to the scene of the incident,we saw that Luke was not there.Then we heard the12of a dog barking in the forest.I13the barks as Luke's.The fireman followed the14of the dog until they found him barking loudly by the side of an injured fireman who was lying on the ground and15waiting for rescue.

    Thanks to Luke,four kittens and a fireman were saved.That day,I was very proud of Luke for his two heroic 16.Luke showed much compassion（同情心）for both animals like him and for a human being who was trying to put out the fire with his colleagues.Truth to be told,my17was immeasurable.

    I paid a visit to the fireman in his house accompanied by my lovely Luke.What a18scene it was when the fireman hugged Luke tightly to his chest!"One thousand thanks,Luke,for saving my life,"the fireman said.

    This true story of love and compassion shows us that pets are loving,caring and compassionate.We should love and19them.Little animals can do20things for humans.

阅读下文，回答相关问题。

                                                                                                     学学胡弗
        ①鲍伯·胡弗是美国著名的试飞驾驶员，他在空中表演的特技，令人叹为观止。一次，他从圣迭戈表演完毕，准备飞回洛杉矶，可是，在距地面90多米高的空中，有两个引擎失灵。幸亏他反应机敏，技术高超，飞机才奇迹般地着陆。
        ②胡弗紧急着陆之后，第一件事就是检查飞机用油。正如他所预料的，他驾驶的那架螺旋桨飞机，装的却是喷气机用油。胡弗立即召见那位负责保养的机械工。年轻的机械工早已痛苦不堪，一见胡弗，便吓得直哭。因为他的过失险些送掉了三个人的性命。
         ③胡弗并没有像大家预料的那样大发雷霆，而是伸出手臂，抱住维修工的肩膀，信心十足地说：“为了证明你能干得更好，我想请你明天帮我的F一51飞机做维修工作。”从此，胡弗的F一51飞机再也没有出过差错，那位马马虎虎的维修工也变得兢兢业业，一丝不苟。
        ④胡弗的故事给我们诸多启示，其中最大的一点是：胡弗对待马马虎虎的维修工采取了真诚的宽容的态度。其实，我们的教育何尝不需要真诚的宽容?
        ⑤是的，真诚的宽容与安慰是使受伤的心灵霍然而愈、起死回生的良药，它能让人在磨难中拼搏，从失败中奋起。在学生出现过失时，心地高洁的教师往往会自我克制，出人意料地说出宽慰学生的话语，使其在最短的时间恢复自信与自尊。这就要求我们教师必须有宽广的人文视野和海纳百川的宽容精神，不仅要容忍学生的精神个性，容忍学生对自己说“不”，还应容忍学生犯错误。因为只有教师民主的阳光，才能照亮学生创造的原野。
        ⑥宽容是素质教育主体性的要求。苏霍姆林斯基说过：“赞扬差生极其微小的进步，比嘲笑其显著的劣迹更文明。"事实上，只要对学生多一些宽容和赏识，多用发展的眼光看待他们，帮助其分析症因，提出应对策略，就能使他们的潜力得到开发，而这种潜力一旦被挖掘出来，定会进发出惊人的力量。
        ⑦相反，                                                     。
        ⑧学会宽容，多一份宽容吧!因为宽容是智慧的善良，是悟透人间之难的觉醒，是对人类的爱和信心，是睿智，是勇敢，是寂寞冬夜里飘然降来的春风。让教学的百花园里多吹一些这样的春风吧!