在进行展网工作时，应该用铁丝将网卷的一头固定在（）上，然后展网。
A、支架
B、挡煤板
C、前探梁
D、立柱
参考答案：B
根据所给图片补全句子，每空一词。（数字要写成英文形式）
1. A pair of ______________ is ______________ yuan.
2. This ______________ is ______________ dollars.
3. The ______________ is ______________ yuan.
4. That ______________ is ______________ dollars.
5. A pair of ______________ is ______________ pounds.
在严重衰退的市场上，随着风险资产投资比例的不断下降，投资组合能够最终保持在最低价值基础之上。
A pair of ______________ is ______________ yuan. 
This ______________ is ______________ dollars.
The ______________ is ______________ yuan. 
That ______________ is ______________ dollars.
A pair of ______________ is ______________ pounds.