—I thought you were building a ship, why not put it in the lake?

—Because it _______. What's more, it needs to ________. [ ]

A. would not finish,  repaired

B. hasn't been finished yet,  be repaired

C. won't finished yet,  be repairing

D. didn't finish,  repaired

海图内容的三大要素是数学要素、地理要素和（）。

A.水部要素

B.陆部要素

C.勘航要素

D.辅助要素