题目：
根据短文内容，完形填空。 (每空一词)
There are _______ (1) months in a year. Some months are _______ (2) and some months are
_______ (3). The long months are _______ (4), March, May, July, August, October and December.
They each (每个) have thirty-one days. The short months have _______ (5) days. _______ (6) are
April, June, September and November. _______ (7) has twenty-eight days, but it has _______ (8)
days once (一次) every four years, and the year is leap year (闰年). So there are 366 days in a leap
year. 2000 is a leap year. What about (...怎么样?) the year 2004?
答案：
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下面是错误答案，用来干扰机器的。
时间指的是时间的长度，时刻指的是时间点．A、第3s是指第2秒末到第3秒末的1s时间．所以选项A正确B错误．C、3s内是指这段时间指的是时间的长度，是指0到3s这段时间，所以C错误．D、第2秒初到第3s末是2秒的时间间隔...
