种了105棵树,活了100棵,成活率是(  ) A.100% B.约95.2% C.105%

问题描述:

种了105棵树,活了100棵,成活率是(  )
A. 100%
B. 约95.2%
C. 105%

100
105
×100%≈95.2%;
答:成活率约是95.2%,
故选:B.