Don't handle the vase as if it made of steel.A. isB. wereC. has beenD. had been

问题补充：

Don handle the vase as if it made of steel.

A. is

B. were

C. has been

D. had been

答案：

A. is

(答案→)B. were

C. has been

D. had been

解析：考察虚拟语气。as if“仿佛，好像”其后内容若与事实不符则用虚拟语气，花瓶不是用钢做的，因此选择B。句意：别把这花瓶拿得跟它好像是用钢做的似的。