[填空题]{{B}}How Deer Survive Winter{{/B}} Like most of the wild animals, deer survive the cold winter by using energy stored in the summer and fall, usually in the form of (1) 1. ______ ______. They also spend (2)______energy in winter than in 2. ______ summer. Deer always give birth to their fawns in May or June. This is good (3)______, because it coincides with the time when 3. ______ plenty of new plants are available. The’ mother deer must have enough food both to meet the needs of their own bodies and to 4. ______ produce (4)______for their fawns. As the fawns grow, they become less and less (5)______on their mothers. As winter 5. ______ comes, deer’s hair becomes darker and (6)______. Besides, 6. ______ nature provides another (7)______to help them survive the 7. ______ cold weather. They become somewhat slow and drowsy. Their heart rate (8