题干
补全短文。请阅读下面的对话, 并根据对话的内容, 将下面文本框中的文段大意补充完整。（提示：每空限填一词。）
Julie: Look! The elephants are eating grass. They are so big.
Susan: They are big and friendly to people.
Julie: There are giraffes over there.
Susan: What are they doing?
Julie: They are playing with the elephants.
Susan: Do you like giraffes?
Julie: Yes, I do. They are very cute.
Susan: Are the koalas there sleeping?
Julie: Yes, they are. They usually sleep during the day.
Susan: Is the lion eating there?
Julie: No, it isn't. It's relaxing. It relaxes for 20 hours every day.
The elephants like eating ____. Julie likes giraffes because they are ____. They are ____ with the elephants. Koalas don't often ____ at night. The lion relaxes for 140 hours a ____. |
答案(点此获取答案解析）
grass,cute,playing,sleep,week
，利用地球同步卫星与地球表面的距离为
这一事实可得到哈勃望远镜绕地球运行的周期，以下数据中最接近其运行周期的是