【正文】
. air doesn’t rust boil make sure Adding keep nails airfree halffill ordinary A simple Scientific Experiment The aim / purpose of this experiment is to find out whether To conduct the experiment properly, you need the following things: . The steps are as follows. First put . Next, . And then, . Finally you can see Therefore, we can draw / reach / arrive at the conclusion that Retell the passage based on the structure A simple Scientific Experiment The aim / purpose of this experiment is to find out whether iron rusts in airfree water. To conduct the experiment properly, you need the following things: iron nails, test tubes, oil, tube holders. The steps are as follows. First, halffill a test tube with water and boil the water for three minutes. Next, put two clean nails in the water. And then, add some oil to the water and leave the tube for one week. Finally, you can see the nails do not rust in the tube with airfree water. Therefore, we can draw / reach / arrive at the conclusion that iron does not rust in airfree water.