Loulan city is not at all        a traveler who has never seen the desert before can imagine.

A．that

B．what

C．which

D．where

饭金整平手工具主要是利用（）成撬棍等于工具进行的整平作业。

A.垫圈熔植机

B.于锤

C.顶铁

D.修平刀

E.砂轮机