The natural environment should be protected because of the important role _______ plays in human survival and development.
A．which B．the one
C．it D．that
The natural environment should be protected because of the important role _______ plays in human survival and development.
A．which B．the one
C．it D．that
C
【解析】考查代词。句意：自然环境应该被保护，因为它在人类生存和发展方面起着重要作用。此处用it指代The natural environment，在从句中作主语，it用于替代上文出现的同一事物，所指的是同名同物；one用于替代上文提到的可数名词单数，表示泛指；that用于替代上文出现的可数名词单数或不可数名词，表特指。one和that所指的是同名异物。不能用which，如果是which的话，那构成定语从句，先行词是role，但这不符合语境。故只能选C。