读俄罗斯有关地图，回答问题

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用方框中所给单词的适当形式填空，每词限用一次。            

(1) Take some rest after lunch and you won't feel ____ in the afternoon. .

(2)When the child saw her parents waiting at the school gate, she ran ____  them.
(3)Don't ____  about your exams, everything will be fine.
(4)To protect____ , scientists suggest the people stop fishing in some parts of the ocean.
(5)My host family is really nice .They try____  best to make me feel at home .

传说中的部落联盟首领推举产生的办法，后人称之为“____”。

显微镜的物镜和目镜的成像原理分别和下列哪组仪器成像原理类似（　　）