①只要拥有了坚强的意志，就没有克服不了的困难

②自信使人有克服困难的勇气和自强不息的力量

③民族精神对内具有凝聚和动员民族力量的作用

④共同理想是团结全国人民共同奋斗的巨大精神力量

为了形象地说明宇宙扩张学说，8年级物理（下）课本上用一个黏有小金属粒的气球做演示实验，该实验将黏有小金属粒的气球看成宇宙， ____看成是宇宙中的天体，气球膨胀时，任一小金属粒周围的其他小金属粒都在离它远去．这里主要运用的一种思维方法是 ____（选填“等效法”、“类比法”或“转换法”）．

根据句意，从方框中选择合适的单词或短语，并用其适当形式完成句子。                      

(1)Designs for the new gym will be ____  in the library. 
(2)Jim ____  his father. They are both clever and a bit quiet.
(3)I was waiting for the school bus but it didn't come. Then I ____  it was Saturday.
(4)Beijing is cold this time of year. You need to ____ warm clothes if you go there.
(5)Don't forget to ____  the door if you are the last one to leave the classroom.