从钻石抛磨方向上来看，具（）硬度最小。
A.一向纹理
B.二向纹理
C.三向纹理
D.三角形纹理
参考答案：B
--- What do you think of the movie Avatar？
--- Interesting. It is _______ again.
A．worth watching
B．worth to watch
C．worthy watching
D．worthy to watch
We can't blame John for the mistake. He wasn't here when we decided what to do, so he ___ about the
plan.[ ]
A. wasn't know
B. was known
C. can't be known
D. couldn't have known
