考试只限于用黑色圆珠笔，其他都是不行的。监考老师好像都是中国的啊。

今天刚刚改的通知，具体怎样还不知道呢。以往没有计算机阅卷，都无所谓。Please use black ballpoint pen at all times; to complete your details on the booklet and when answering the exam questions. (Pencil, fountain pens, gel pens, roller ball pens, metallic effect pens, glitter pens and other colours of pen (including highlighter pens) will not be picked up by the scanning technology and could result in questions not being marked correctly.)——照这个意思，black ballpoint pen应该就是我们常说的水芯笔。roller ball pens,是圆珠笔。

roller pen的笔墨是水性的,ball pen的笔墨是油性的

Rollerball pens are writing instruments which use ball point writing mechanisms with water-based liquid or gelled ink, as opposed to the oil-based viscous inks found in ballpoint pen.

我觉得考试应该是用黑色圆珠笔