We are not really convinced by the “itchy hand” test.

我们并不是真的相信“发痒的手”这种测试。

So your teacher is going to hand out the tests and you're going to sit there and fill it out, and that's an exam.

因此，您的老师将分发试卷， 而您将坐在那儿填写试卷，这就是考试。

We can also use just the preposition " per" in the same way, as in this example: Dear Professor Karen, I handed in the test before the due date, per your instructions.

我们也可以以同样的方式使用介词“per”，如下例所示：尊敬的凯伦教授，按照你的指示，我在截止日期前交了试卷。