1 . It’s very important for man to keep the ____________ (平衡) of nature. (根据汉语提示单词拼写)

2 . I’ve got a good sense of________(平衡) and learnt to ski quite quickly. (根据汉语提示单词拼写)

3 . Susan was ________ (咬) by the snake in the bush last night.(根据汉语提示单词拼写)

4 . She was so nervous that she couldn’t ________ (呼吸) freely. （根据汉语提示单词拼写）

5 . Professor Smith’s lecture on the Internet ________ (使……受益) me a lot . (根据汉语提示单词拼写)

6 . He valued his integrity and would not be ________(收买) by anyone, no matter how many free clothes or flights to faraway destinations he was offered. (根据汉语提示拼写单词)

7 . I don’t like swimming;________(此外，而且), the water is too cold. （根据汉语提示单词拼写）

8 . People can’t cross the ______ (国界) if they don’t have a passport. (根据汉语提示单词拼写)

9 . Journalists insisted on getting to the front line of the ________ (战斗，战役), regardless of the risks.(根据汉语提示单词拼写)

10 . What was it that led to the _________(边境) war? (根据汉语提示单词拼写)