15.The writer of the text thinks that travel is a____________

• A、great midlife activity

• B、challenge for the old

• C、lifestyle for the young

• D、lifelong engagement

A.matter	E.achieve	I.often
B.different	F.know	J.better
C.determination	G.smart	K.usually
D.only	H.next	L.heart

13.According to Para.4,the elders think that younger people should____________

• A、give priority to travel

• B、make time for their families

• C、find a focus for their lives

• D、work hard to save money