______, we can feel energetic in our study and work by doing sports.

Every time when we return from a long vacation to our routine work or study, we may feel stressed.

A、post-holiday depression           
B、post-holiday syndrome            
C、post-holiday stress
D、post-holiday disease

Doing social work can _____________our horizon.

A、enlarge
B、increase
C、raise
D、rise

When we think of tourism, we can include in our definition of tourism people who are taking a study tour

When we feel over-stressed, we can use stress management techniques such as crying, seeking help from