读短文，判断正(√)误(×)。 Chinese people had calendars for a very long time. They watched the sun and the moon and then made the calendar. They called it the ' moon ' calendar. Every year they have 12 months. But sometimes they had 13 months. They also had weeks in the calendar. Each week there were seven days. Now Chinese people still use the ' moon ' calendar for important holidays. (     ) 1. Chinese people called their calendar the ' moon ' calendar. (     ) 2. They had 13 days every month. (     ) 3. They didn't have weeks in the calendar. (     ) 4. Chinese people don't use the ' moon ' calendar anymore.