【单选题】
对于亚马孙热带雨林,我们既要保护又要开发,正确的说法是()
①
A.面对当前雨林正在遭到毁灭性破坏的严峻形势,首先应该把保护放在第一位,而考虑到当地人生活水平的提高,又要扩大森林的开发,因此亚马孙雨林的开发与保护这对矛盾不可调和
②
B.在雨林开发中应鼓励保护性的开发方式,如雨林观光、生态旅游等
③
C.在雨林的开发中应采用皆伐与更新造林相结合,达到既开发又造林的目的
④
D.对雨林的保护主要责任由当地来解决,其他国家没有权利和义务来承担责任
【单选题】
已知A、B、C三点坐标分别为(10、20、30)(20、40、60)、(30、60、90),则A、B、C三点______。
①
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无法判断