单项选择题

Tomorrow Japan and South Korea will celebrate White Day, an annual event when men are expected to buy a gift for the adored women in their lives. It is a relatively new __21__ that was commercially created as payback for Valentine’s Day. That’s __22__ in both countries, 14 February is all about the man. 　　 On Valentine’s Day, women are expected to buy all the important male __23__ in their lives a token gift; not just their partners, __24__ their bosses or older relatives too. 　　 This seems __25__ enough. Surely it’s reasonable for men to be indulged on one day of the year, __26__ the number of times they’re expected to produce bouquets of flowers and __27__ their woman with perfume or pearls. 　　 But the idea of a woman __28__ a man didn’t sit easily with people. In 1978, the National Confectionery Industry Association(糖果业协会) __29__ an idea to solve this problem. They started to market white chocolate that men could give to women on 14 March, as __30__ for the male-oriented Valentine’s Day. 　　 It started with a handful of sweet-makers’ producing candy __31__ a simple gift idea. The day __32__ the public imagination, and is now a nationally __33__ date in the diary-and one where men are __34__ to whip out their credit cards. In fact, men are now expected to give gifts worth __35__ the value of those they received. What a complication: not only do men have to remember who bought them what, they have to estimate the value and multiply it by three.

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