1 . The scientist has a lot of experience with ________ (无知) and doubt and uncertainty, and this experience is of great importance. (根据汉语提示单词拼写)

2 . Your newly-bought smart phone is still under g________, so you can have it repaired for free. (根据首字母单词拼写)

3 . There is no road ahead of us but the road will come into e________after we walk through. （根据首字母单词拼写）

4 . I buy you lunch and you fix my computer. Is that a fair e____________?(根据首字母单词拼写)

5 . Many animal species are in danger of e________ due to habitat loss and climate change. (根据首字母单词拼写)

6 . The police think the videotape may hold some vital cues to the i________of the killer. （根据首字母单词拼写）

7 . A lot of money has been spent on traffic management but there is no c________ for the problem. (根据首字母单词拼写)

8 . With the encouragement from his family, Joe began to hold a positive________ (态度) towards his life and study. （根据汉语提示单词拼写）

9 . The government plans to begin emergency ________ (救济) as soon as the country is cleared of troops. （根据汉语提示单词拼写）

10 . An important ________ of Van Gogh’s paintings is their bright colors. （根据句意填空）