问题
选择题
Cook was a strict but good captain , _____ who , usually , took care of the sailors on his trip .
A．the one
B．one
C．that
D．this
答案
答案：B
考查代词，the one特指前面的可数名词单数，one泛指前面的可数名词，that代指前面的可数名词单数，或是不可数名词，this指代下文，句意是：Cook是严格的但很好的船长，一个通常在航行中照顾水手的船长，one指代a captain。选B。