As the examination is conducted only in english , it performs as a proficiency test of business english as well , he points out .
他指出,由于这项考试只用英语进行,所以它也是一项测试商务英语熟练程度的考试。
Memorability : when users return to the design after a period of not using it , how easily can they reestablish proficiency ?
可记忆性:在一段时间没有使用之后再次使用该设计,用户重新熟练操作的难易程度
Previous studies looked at how sensing numbers affected performance , but researchers didn 't know whether the natural ability to sense numbers or proficiency seeing numbers as symbols limited math skills .