小学科学苏教版五年级下册总复习题（Primary science, grade 5, grade 5）.docVIP

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小学科学苏教版五年级下册总复习题（Primary science, grade 5, grade 5）.doc

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小学科学苏教版五年级下册总复习题（Primary science, grade 5, grade 5）

小学科学苏教版五年级下册总复习题（Primary science, grade 5, grade 5） Primary science, grade 5, grade 5 A, judgment, 1. The panshan highway is actually a kind of inclined plane. (a) 2. The use of leverage must be efficient. (a) 3. The usual use of ship slurry is a kind of lever for saving distance. (a) 4. The advantage of using a fixed pulley is saving effort. (a) 5. The sharp axe splits the wood and USES the principle of the force of the inclined plane. (a) Hardness is the ability to resist the extraneous engraving, which is one of the important characteristics of minerals. (a) Rocks and minerals are inexhaustible resources. (a) The galena is rich in metallic gloss, and it contains a common metal, lead. (a) 9. Sedimentary rocks were formed after the magma cooled after the eruption. (a) Gold steel is the hardest mineral. (a) Quartz has eight sides, in a hexagonal shape. (a) Sleep and physical activity can protect the brain. (a) The surface of the human brain is uneven. (a) All nerves are emitted by the brain. (a) The feeling of cold weather is produced by the visual organ. (a) There is no change in the sensitivity of the skin around the body. (a) Second, the choice 1. When pulling the nail with the hammer, the hammer becomes (). A, lever B, pulley C, axle D, slope 2. Screw screws () that are finer than threads when screws are screwed. A, effort B, effort C, same, no difference 3. The screw is actually a simple machine, i.e. a deformed () A, lever B, pulley C, axle D, slope The talc is the most soft mineral in the world, it can (). A, write B, make A powder C, pave the way 5. The following minerals that are bubbling with hydrochloric acid are (). A, sandstone B, shale C, marble Some of the rocks and minerals are consumed by day by day, and it is estimated that the time of exhaustion of oil is approximately (). A, 200 years B, 40 -- 50 years C, 20 -- 30 years The coal seams in the sedimentary strata were formed by ancient (). A, animal remains B, plant remains C, plankton It is wrong