非谓语.求讲解.（ ）map dated back to about 3000B.C.
问题描述：
非谓语.求讲解.（ ）map dated back to about 3000B.C.
A.The oldest known
B.Known as the oldest
C.It was the oldest known
D.Known to be the oldest
为什么不能选BC?
答
A.The oldest known 是对的.这 oldest known.是“已知的最古老的”,做定语成分,修饰主语map的.句子的骨干其实是,The map dated back to about 3000B.C.B.Known as the oldest错在词序不对,如果改为The map known as ...