（12）The weather in Beijing is cooler than___in Guangzhou.A.this B.it C.that D.one（12）The weather in Beijing is cooler than___in Guangzhou.A.this B.it C.that D.one 标答是C为什么,为什么不能选B

（12）The weather in Beijing is cooler than___in Guangzhou.A.this B.it C.that D.one（12）The weather in Beijing is cooler than___in Guangzhou.A.this B.it C.that D.one 标答是C为什么,为什么不能选B
（12）The weather in Beijing is cooler than___in Guangzhou.A.this B.it C.that D.one
（12）The weather in Beijing is cooler than___in Guangzhou.
A.this B.it C.that D.one
标答是C为什么,为什么不能选B

（12）The weather in Beijing is cooler than___in Guangzhou.A.this B.it C.that D.one（12）The weather in Beijing is cooler than___in Guangzhou.A.this B.it C.that D.one 标答是C为什么,为什么不能选B
it 用来指同一个物体.如：Your bag looks nice.Where did you buy IT?I want to buy one.“你的包真好看.你在哪买的它?我也想买一个.IT 指的前句中的Your bag.和Your bag是同一个物体.（one则指同一类物体）在比较句中如果是单数或不可数名词要用that 复数就要用those 如：The mooncakes from Guangdong are nicer than those from Beijing.

此句中that是指The weather in Beijing is cooler ，it不能代替，it只能代替此句中的weather 。根据句意要选c

C
that指代前面有定冠词的名词，但是it指代的上文当中的同一个物体

选C
很确定因为在than后面不能直接接介词in，所以用that代指后面的in后面的名词。

it 说的是上文提过的事物，that是那个的意思