4. The little boy is _________.
A: four years old
B: five years old
C: six years old
D: seven years old
A: four years old
B: five years old
C: six years old
D: seven years old
举一反三
- The woman's daughter is ______. A: four years old B: eight years old C: nine years old
- ________ ，both my father and mother died. A: At the age of four B: Being four years old C: I was four years old D: When I was four years old
- Visual acuity improves gradually and is emmetropia at ( ) A: 6 months old B: 3 years old C: 4 years old D: 5 years old
- The old man is very healthy. I think he will live______. A: to be 100 years old B: 100 years old C: at 100 years old D: in 100 years old
- The appropriate age for unilateral cleft lip repair is ( ) A: one to two months old B: three to six months old C: one to two years old D: three to six years old