By using space technology China can predict natural disasters __________,Luan saidA.far more precisely than generally thoughtB.far precisely as generally thoughtC.more precise than generally thinkingD.more precisely that of general thought 可though

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By using space technology China can predict natural disasters __________,Luan saidA.far more precisely than generally thoughtB.far precisely as generally thoughtC.more precise than generally thinkingD.more precisely that of general thought 可though
By using space technology China can predict natural disasters __________,Luan said
A.far more precisely than generally thought
B.far precisely as generally thought
C.more precise than generally thinking
D.more precisely that of general thought
可though 为什么不加s
thought 在这不是名词吗?过去式做名词?可thought是可数名词呀

By using space technology China can predict natural disasters __________,Luan saidA.far more precisely than generally thoughtB.far precisely as generally thoughtC.more precise than generally thinkingD.more precisely that of general thought 可though
这里是个省略句:
far more precisely than (it is) generally thought
it指代的是 predict natural disaster 这一行为.
因为think的主语是人,是人们普遍认为预报气象灾害很不精准,所以预报气象灾害是“被人们认为”不太精准,要用被动.

though?应该是thought吧,thought是动词think的过去式形式,所以不加S。