It seems to me that a compromise would be receiving the exam questions a day or two in advance, and then doing the actual test in class with the ticking clock overhead.
2017年12月四级真题(第一套)阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-COUNT
钩号(符号为√)
A tick is a written mark like a V: ✓. It is used to show that something is correct or has been selected or dealt with.