问题

Thegood thing about children is that they veryeasily to new environments
A:has balanced; weighed; on the head
B:balanced; weighed; by the head
C:balanced; weighing; on his head
D:had balanced; weighing; by his head
B:balanced; weighed; by the head
C:balanced; weighing; on his head
D:had balanced; weighing; by his head
正确答案是: