89年01 39题

lara54321

39. The metal aluminum has been first isolated early in the nineteenth century. 答案：D

应该是B吧,是不是答案错了?

require

think b.should be:was

the answer was wrong.

http://forum.chasedream.com/dispbbs.asp?boardID=58&ID=76640&page=1

lara54321

require

no problem,and ask some cool question,we can discuss.