题目内容：

单词拼写（根据汉语和首字母提示，写出单词的正确形式，每空一词。）

1.She entered the room without p________ (许可).

2.Guba gained i_______ (独立) from Spain in1898.

3.Today, we b________ (受益) from countless inventions and innovations.

4.We should have a b________ (平衡) diet.

5.He sat on the steps, s________ (盯着) at the space.