《中华人民共和国环境保护法》是为保护和改善生活环境与生态环境，防治污染和其他公害，保障人体健康，促进社会主义现代化建设的发展而制定的。( )
参考答案：对
路基溜坍危及行车安全时如何处理？
She________the opportunity，but unfortunately she just let it go.
A．should have taken
B．must have taken
C．needn't have taken
D．can't have taken
