依次填入下面横线处的语句，与上下文衔接最恰当的一项是
我常常认为，大地与人之间有一种奇妙的契合。山是____，海是____，沙漠是____，河流是一种寻求，一种机制，一种被辖制的自由。
Egypt ’ s very soil was born in the Nile ’ s annual flood; with the flood came the life -giving mud that made Egypt the granary of the ancient world.（）
Students should_____their own interests as well as do their schoolwork.
Among the following words, “ ______ ” contains a negative prefix.
The teacher gave_____the examination paper.
The differences between synonyms exist in the following areas EXCEPT ______.
One can figure out the meaning of “ airmail ” to be “ mail by air ” by its ______.
In order to buy a new car, you should at least ______ one hundred dollars a week.
It is difficult to ________ the implication between the lines.
合营各方按注册资本比例分享利润和分担风险及亏损。（）
I will do the clearing if you see_____the lunch.