Ⅰ.根据句意及首字母提示补全单词
1.One hundred years is a c________.
2.The men showed great c________ while climbing Qomolangma.
3.Why were you late again, Lisa? Can you tell me the r________?
4.To protect wild animals, we should stop hunters from k________ them.
5.The girl c________ her finger just now. Luckily, it was not serious.