小测验：选择正确的单词

1. holding company
   n. 控股公司
   
2. holding device
   夹持装置，夹紧器，夹具，吸持装置
   
3. holding pattern
   等待航线
   
4. holding pen
   候宰栏
   
5. bank holding company
   银行控股公司， 银行持股公司
   

1. He hold on to my arm with a tenacious grip.
   他紧紧抓住我的手臂不放。
2. A receptacle to hold the relics of saints;a reliquary.
   神龛存放圣骨的容器;圣骨盒
3. These nuts and bolts hold the wheels on.
   这些螺帽和螺栓把轮子固定住了.
4. His disability prevents him from holding a job.
   他的伤残妨碍他就业。
5. There are two large wooden supports that hold up the roof.
   有两根大木柱支撑着房顶。

　2个名词解释