Ⅰ.单词拼写
1．In ________ (现实), we often meet with trouble.
2．He began to ________ (探索) the island two years ago.
3．We need to ________ (简化) this complex problem to make it easy to understand.
4．Tom ________ (发信号) to me to keep quiet.
5．The ________ (出现) of wild goats shows that the environment is getting better.
6．If a problem ________ (发生), you will have to keep calm.
7．She has good ________ (性格) and she is easy to get along with.
8．He is busy ________ (解答) the puzzles the student came up with.
9．Have you ________ (计算) the sum of the money we need for the trip yet?
10．The ________ (应用) of the new technology increased the production.
