1 . Scientists in the 15-16^th century studied the universe by o__________ (观察) the stars, which is so amazing because some of them can calculate so accurately. (根据中英文提示单词拼写)

2 . As a child that has just arrived in such a new environment, he is c__________ (好奇的) about everything because they are different from what he used to see.(根据中英文提示单词拼写)