为自己加油

One of the_____followed by Harold Palmer and his fellow linguists in selecting English words for their teaching is that the words must be most frequently used by native English speakers.

criteria/standards
P72
帕尔默和其他语言学家在选择教学所用的英语词汇的一个标准就是:所选词汇必须是以英语为母语的人最经常使用的词汇。