B

 
68．Zeo is a revolution in the science of sleep mainly because it     .
A．can record one’s sleep process
B．is the first product to manage one’s sleep
C．is free of medical risks
D．provides access to sleep fitness websites
69．What is the most remarkable feature of Zeo?
A．Its direct contact with sleep scientists.
B．Its individualized coaching program.
C．Its effectiveness in curing sleep disorders.
D．Its immediate analysis of sleep data.
70．What customer service does Zeo provide?
A．Cheap online tools.
B．A 30-day action plan.
C．Personalized bedside display.
D．Free delivery of the product.
71．The passage is primarily written to        .
A．encourage people to try the new product
B．instruct people how to use a new tool
C．provide the latest health information
D．illustrate the importance of good sleep habit