A study shows that walking fast in your
题型:选择题
问题:
A study shows that walking fast in your old age is a ______ that you will live a long life. |
[ ] |
A. sign B. mark C. symbol D. signal |
A study shows that walking fast in your old age is a ______ that you will live a long life. |
[ ] |
A. sign B. mark C. symbol D. signal |