"考试认真"用英语可以翻译为 serious。例如：

1. She always takes her exams seriously.

2. He is a seriousstudent who never cuts corners.

3. Her seriousnessin preparing for the exam was evident.

这些翻译都准确地传达了"认真"在考试中的含义，即对待考试严肃、不苟且。