A new study found a teacher has anxiety about maths feeling can influence how his or h

问题补充：

A new study found a teacher has anxiety about maths, feeling can influence how his or her female students feel about math．

A. when that; which

B. that when; that

C. that if; which

D. if that; that

答案：

A. when that; which

(答案→)B. that when; that

C. that if; which

D. if that; that

解析：考查宾语从句，动词found后面跟的句子是个宾语从句，宾语从句里又含有一个时间状语从句，句子意思“新的研究发现当老师担心数学时，发现感觉能影响她或他的女性同学怎样对数学摸索”，所以选B