As we have seen, the focus of medical care in our society has been __________ from curing diseases to preventing diseases—especially in terms of changing our many unhealthy behaviors.
If your child tends to __________ children of her own age and push them round, try to arrange for him to play with older children who will have no trouble in holding their own.
The south-to-north Water Division Project transports water from south China to the north and northwestern regions to ease water , enabling people in Beijing to drink water from Yangtze River 1500 km away.