单选题 After putting the Japanese watch in water for 20 minutes, two scientists found ________.

A、 it was a good watch
B、 it went forward
C、 it went faster than the Swiss one
D、 it went backwards 120 minutes

【正确答案】 D

【答案解析】[解析]从文章第二段最后一句：They both silently found that the German watch was losing 60 minutes and the Japanese are doubled that．得知，日本牌的手表慢了120分钟。故本题答案为D。