Business travel can be a challenge. You may struggle to get a good night’s sleep in a strange bed orbecause of jetlag. Your smartphone could probably give you an answer. There are many apps to help yourelax and fall asleep faster. Some of the apps play music or just make soft noise like you hear around thehouse at night. Others use natural sounds like wind and waterfall to help listeners drift off to sleep. Thereis even an app that offers seasonal sound that you can choose to match the time of year. You can listen tofrogs for spring, a barbecue for summer, dry leaves on the ground for fall, and cracking ice in winter. Thoseapps are truly wonderful inventions for business travelers.
34. [ ] What does this passage suggest?
(A) Smartphones have many disadvantages.
(B) It is best to turn your smartphone off at night.
(C) Everyone has a smartphone nowadays.
(D) There are many apps to help business travelers.