There are two other buttons on the cellphones as well one ofis”HELP”.A. whichB. theseC. t

问题补充：

There are two other buttons on the cellphones as well, one ofis”HELP”.

A. which

B. these

C. them

D. that

答案：

(答案→)A. which

B. these

C. them

D. that

解析：考查定语从句。当做介词宾语时，指物的引导词只能使用which，根据先行词two other buttons和one of可知选A。