[单选题]Directions: In this part there is a sentence with four choices marked A, B, C and D. Choose the one that best completes the sentence.（ ） personality varies from person to person is known to all.
A
What
B
That
C
Whether
D
Which
正确答案：B
题目解析
分析句子可以确定，（ ）personality varies from person to person作后面is的主语，为主语从句。在主语从句中，不缺少任何成分和意义，所以需要使用that引导，故选B。what在引导从句时需要充当成分，whether表示是否，which表示哪一个，均不符合句意，故排除。
