1 . This article will form the b___________(基础)for our discussion. (根据中英文提示填空)

2 . A balanced diet is b________(有利) to our health. (根据中英文提示单词拼写)

3 . She felt________(背叛) when she found out the truth about him.. （根据汉语提示单词拼写）

4 . As we all know, books are the source of knowledge. I gain a lot of___________(好处) from them. (根据汉语提示单词拼写)

5 . Many rock _______(乐队) were able to follow in the footsteps of the Beatles.(根据汉语提示单词拼写)

6 . It is difficult to _____(呼吸) at high altitudes. (根据汉语提示单词拼写)

7 . I hold a firm   ________(信念)that he will keep his promise. （根据汉语提示单词拼写）

8 . After a______(简短的)introduction, the students began to take part in their favorite activities. (根据汉语提示单词拼写)

9 . The company I applied to has set up 5_________(分公司) in China.(根据汉语提示单词拼写)

10 . A ________(均衡的) diet is essential for everybody. （根据汉语提示单词拼写）