2 . The astronauts all over the world risked their lives e_________ the universe for human kind and believed human’s future lies in space. （根据首字母单词拼写）

3 . After a_________ to escape from the city occupied by enemies, he ended up being caught. （根据首字母单词拼写）

4 . Scientists in the 15-16^th century studied the universe by o_________the stars, which is so amazing because some of them can calculate so accurately. (根据首字母单词拼写)

5 . This stick is used for m________ the amount of oil in the engine. (根据首字母单词拼写)

6 . I’m tired of ________ (争论) you on this point.(根据汉语提示单词拼写)

7 . The job seems easy, but it involves ______ (分析) large quantities of complicated data.(根据汉语提示单词拼写)

8 . All the students preferred ________ (骑行) a bike to taking a bus. (根据汉语提示单词拼写)

9 . This task can only be done by c ________ (合作) with your group members. (根据中英文提示单词拼写)

10 . It is said that the researcher has difficulty in p________ (预测) where AI will lead us. (根据中英文提示单词拼写)