[阅读判断]The river was so high that the water ran into streets and houses. Many streets had to be closed to cars and trucks because of the high water. This made it difficult for fire trucks， police cars， and other rescue vehicles to help people who were in trouble.
Q： Rescue vehicles had a hard time getting to people.
[阅读判断]Despite other explanations， the real answer in my opinion lies partly in the child himself， partly in the behavior of the people around him.
Q： The reason why children learn their mother tongue so well lies solely in their environment of learning.