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现行的人教社生物自然室编写的高二《生物》第一册 (试验修订本·必修 )第 4 7页实验有不妥之处 ,特此提出。在实验五的方法步骤的演示图中 ,在分别向试管1、2中滴加试液时 ,滴管应垂直于试管管口 ,而不应该斜放 ,这样就与化学中滴管的操作要求相一致 ,同时也能培养学生正确使
It is hereby proposed that the experiment of the second year of the “Study of Biology” (Test Revision, Compulsory) in the second edition of the Biology and Nature Department of the People’s Education Society should be inappropriate. In the demonstration diagram of the method step of experiment 5, when adding the test solution to the test tubes 1, 2 respectively, the dropper should be perpendicular to the test tube nozzle, and should not be placed obliquely, so that the operation requirements with the chemical dropper Consistent, but also to develop students to make correct