单选题 One day two scientists were quarrelling about whose watch was better, the German one or the Japanese one. Since they were scientists, they decided to do an experiment to test the watches. They went into their lab and filled a basin with water, put the watches in, waited for 20 minutes and took them out.
They could see there was something wrong with both watches. They observed them for several hours before speaking to each other. They both silently found that the German watch was losing 60 minutes and the Japanese are doubled that.
The scientist with the Japanese watch then slowly raised his head and said, "Both watch are out of work, but my watch is right more often than yours, so it's better." The scientist with the German watch went home without saying a word.

单选题 The two scientists were quarrelling at the beginning of the story, because ______.
A. the Japanese watch was better
B. the German watch was better
C. each of them thought his own watch was better than the other's
D. both the watches were wrong

单选题 They did an experiment because they ______.
A. wanted to know whose watch was better
B. liked their lab
C. wanted to repair their watches
D. had a basin of water in their lab

单选题 After they did the experiments, they found ______.
A. both their watches were good
B. neither of their watches could tell the correct time
C. there was something wrong with the German watch
D. there was nothing wrong with the Japanese watch

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 German one D. it went backwards 120 minutes

单选题 How about the German watch at last?
A. It went more correctly than before.
B. It stopped working.
C. It went as well as the Japanese one.
D. It was better than the Japanese one.