“运输工具”名称栏:( )。
A.江海
B.EASTEXPRESS/160E
C.EAST EXPRESS 2005.9.24
D.EAST EXPRESS
参考答案:C
— Can you go shopping with us?
— Sorry, I can't. I _____ my house. [ ]
A. cleaning
B. am cleaning
C. clean
D. cleaned
要想完全限制一个六面体在三维空间的运动,必须在与坐标平面平行的物体表面选择至少()定位点。
A、三个
B、六个
C、九个
D、十个