在全国人口普查中，全国总人口数是总体，每个人是总体单位。
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Who is the founder of Airbnb?
A. Elon Musk
B. Thales Teixeira.
C. Travis Kalanick
D. Brian Chesky and Joe Gabbia
Who was Uber’s main competitor according to the text ?
A. Car owners
B. Taxi companies
C. Public transportation
D. Ride-sharing apps
Which of the following statement about Airbnb is NOT right?
A. It is an apartment sharing website.
B. Property owners are willing to list their homes online for the reason that it offers more chances of finding a potential renter.
Craigslist is the main competitor of Airbnb.
D. Photographers were once hired to take inviting pictures to make its site more appealing.
What is the effective marketing strategy used by a company to expand their customer base from one thousand to a million ?
A. Digital marketing
B. Traditional media marketing
C. Mass marketing
D. Word-of-mouth marketing
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