题目

The Adventure Guides Program New Member Information for the Adventure Guides Program ( for children aged 4—12) What Is the Adventure Guides Program All about? The objectives of the program are: ● Fostering companionship and setting foundation for positive, lifelong relationships between parent and child ● Increased understanding of one another ● Expanded awareness of spirit, mind and body ● Great memories ● Fun!!! Parent and Child Will Be Joining… The nationwide affilicated(隶属的) program sponsored by local YMCA’s and part of the National Council of YMCA’s A smaller group空气由于受    ，所以会对空气中的物体产生压强，这个压强叫    ．