Psychologically there are two dangers to be guarded against in old age.
A、Psychologically old people are too weak to deal with the two dangerous problems.
B、Generally speaking, old people are most vulnerable to psychological problems.
C、Psychologically, there are two dangers old people should take care to avoid.
D、Old people should be protected from the dangers of psychological problems.
【正确答案】：C
【题目解析】：此句的意思是在心理上，年老时有两种危险要防范。
