摘要：1）The word "data" is plural, so we say thees data show, the data support. 2) Affect vs. effect. Affect is verb, while effect is noun in general. Excep 阅读全文

摘要：首先我们来看以下范例。 The fear expressed by some teachers that students would not learn statistics well if they were permitted to use canned computer programs h 阅读全文