工程安装时应准备安装工具,下列包括的有?()
A.内六角扳手
B.水平仪
C.切割机
D.指南针
参考答案:A, B, D
I want to help my mother, but I don't know _________.
A. how to do
B. what to do
C. where to do
D. why to do
山野:猎人
A.生猪:屠宰厂
B.教室:学生
C.农民:农场
D.野兽:旷野