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    Last summer£¬Uber finally started allowing its customers to tip their drivers. Nothing actually prevented them from tipping before. At the end of the ride a passenger could have pulled out his wallet£¬fished around for change and handed the driver a few dollars. But it would have seemed foolish to do so£¬when everything else about the deal was handled through a few taps of the app. The app didn’t enable tipping, so riders didn’t tip.

All of this stresses the difficult problem for hotel housekeepers. Increasingly£¬people book hotel rooms through their computers or phones. They pay£¬and often pre-pay£¬with their credit cards. There’s a good chance they don’t even carry cash. And yet to tip the housekeeper—or the bellhop or concierge—there’s no choice but cash.

It is probably no coincidence, then, according to the New York Times£¬that fewer than one in three hotel guests in America now leave tips for the people who clean their rooms. It’s not as if hotel guests can’t afford them.

Hotel pay varies widely, but some housekeepers rely on tips for their life. Housekeepers in some cities made as low as $10 an hour last year. After the Marriott chain started leaving envelopes in 160,000 rooms for housekeeper tips£¬tipping seemed to have increased, according to the Times. But Marriott ended the practice a few weeks later, finding it unpopular with guests, some of whom felt pressured into tipping.

A better solution would be to go the Uber route. Upon checkout (or electronic checkout)£¬guests could be asked if they’d like to tip their housekeeper. This would be similar to what happens at the end of a ride on ride-hailing apps£¬or on tablet screens in shops.

1£®Why does the author mention Uber in the first paragraph?

A£®To introduce the topic.              B£®To advertise the app.

C£®To arouse an argument.               D£®To make a comparison.

2£®What can we learn from Marriot’s practice?

A£®People didn’t tip.                  B£®Some felt forced to pay.

C£®Room service improved.               D£®Guests preferred to tip by card.

3£®What is the text mainly about?

A£®Nothing stops customers tipping.         B£®Housekeepers live happily on tips.

C£®Tipping on apps is the only solution.        D£®Cash-free deals make it harder to tip.