青岛版小学三年级上册科学复习题(上册（The Qingdao version of the third grade primary school science review (Volume I）精选.docVIP

青岛版小学三年级上册科学复习题(上册（The Qingdao version of the third grade primary school science review (Volume I） Chen Xia Review the outline Unit 1 1. what aspects of toys do we usually describe? Answer: color, shape, size, performance and so on. 2. when playing with toys, watch the sides (observe the features of the toys), the edges (the questions to be studied), and (explore the secrets of the toys). 3. how do you classify plants? Answer: according to the shape of the root, the stem of the soft and hard points, the living environment, the shape of leaves, points, and so on. 4. how do you classify animals? Answer: according to the sky, the middle reaches of the water, the ground running, living habits and so on. 5. how to make friends with plants? Answer: watering the plants and fertilize the plant, plant to plant, to catch its listing on the living environment and so on. 6. how to make friends with animals? Answer: feed small animals for dinner, bath for small animals, etc.. 7. give an example of how to protect small animals Answer: (1) do not harm the animal and animal, not disorderly catching birds eggs; (2) to see the injured animal to give it the treatment, cure and returned to nature; see people catch animal should be discouraged, and promotion of animal protection law. The 8. classification is an important method of scientific research. Classification, first of all to determine a certain standard, the standard is different, the results of classification is also different. Classification is widely used in our life, such as classifying clothes, classifying food, classifying vehicles and so on. 9. what are the uses of plants? Answer: some plants can be used by human beings. Some plants can be watched by human beings. Some plants can cure diseases. 10. knowing the position of an object requires reference to the location of other objects around it. Description position can be used before and after, and the four corners of the world orientation words etc.. (upper North, lower s