问题详情

In most cases, you can transplant a tree successfully, at any time, if you follow the instructions for planting a tree. The most important thing is to dig out enough roots, but this process is difficult with a large tree.
When you dig out the tree, leave a ball of earth around its roots. This ball of earth should measure about a foot wide for every inch of the tree trunk"s diameter. Dig deep enough to avoid cutting off too many taproots.
It is wise to call in a professional tree expert to transplant a tree more than a few inches in trunk diameter.
Transplanting a tree is ______.
A．very different from planting a tree
B．so difficult that an expert should always be called in
C．much like planting a tree
D．done successfully in the right seasons