题目

A. lose their job B. give up C. changing D.possibly Some animals even have a sixth sense for the 【1】 weather. Let’s start with our little friends with feathers: birds. From the height of flying birds, we can tell how bad the weather is going to be. It’s said that if birds are flying high, the weather will be clear. But if they’re flying closer to the ground, a storm 【2】 comes on the way. The next forecaster is the ant. In preparation for bad weather, ants build up mounds (土堆) to protect themselves. So if you notice higher mounds in your yard than usual, the rain is going to f二年级有女生13人，男生17人，共有学生人，如果每5人一组做实验，可以分组。列一个综合算式是。