凭几
参考答案：
中国古代木器家具之一种，为跪坐扶持之物，战国两汉墓葬或有出土，画像石上一般也可以见到。
非零自然数的倒数一定比它本身小．______．（判断对错）
We have been told that under no circumstances we can use the telephone in the office for personal affairs.
A. did we use B. may we use C. we may use D. we could use
