1 . He stood there ________ (呼吸) deeply and evenly. (根据汉语提示单词拼写)

2 . Some scientists are making their attempts to push the b________ of human achievement. (根据首字母单词拼写）

3 . Opening a book may not necessarily be b_________________________, if one doesn't do it right, it may cause harm. (根据首字母单词拼写)

4 . I think it’s important to keep a b________ between work and relaxation. (根据首字母单词拼写)

5 . The Eagles went home angry and b_________ because they did not win the tournament. (根据首字母单词拼写)

6 . Here, people could sing as loudly as they wanted to without fear of b____ anyone outside.（根据首字母单词拼写）

7 . Doctors say many diseases can be b_______________from spreading by hand washing. (根据首字母单词拼写)

8 . Interacting with the seniors has proven____________（有益的）for the young ones,making them more open-minded. (根据汉语提示单词拼写）

9 . The education b_____ for the coming year is about $4 billion, which is much more than what people expected.        （根据首字母单词拼写）

10 . George was taken to the hospital to be treated after he was ______(咬)by a snake. （根据汉语提示单词拼写）