１、on smoking that it\'s ok是句子的主干，voices now come from many quarters insisting that the science about global warming is incomplete是原因状语从句．这一句有点复杂不知道我说得正不正确？
２、Do you remember all those years 是主干，when scientists argued that 。。。是定语从句其中that smoking would kill us 是宾语从句，but 引导的表折关系的从句．
欢迎来到免费考研网www.freekaoyan.com
