中国大学MOOC: The shape and form of the bark differ not only in the variety of trees but also in age. In other words, the bark on young trees may appear distinctively from that on more __________ trees.
举一反三
- Maple trees are thought to be fall color trees or foliage trees.
- 262.30 % of the young trees, attacked by diseases, ________pine trees. A: is B: are C: was D: has been
- People who love trees may （）. A: never cause trees injury B: damage trees on purpose C: do harm to trees without knowing it D: not be aware of which trees are healthy
- 中国大学MOOC: ________more attention, the trees could have grown better.
- People who love trees may ______. A: never cause trees injury B: damage trees on purple C: do some harm to trees without knowing it D: not be aware of which trees are healthy