第3题: [填空题]By saying "As you experiment, avoid random motion", the author means you should ______ in order not to head in an opposite direction. 参考答案:not take blind steps 答案解析:本题空白处问“实验过程中,为了避免南辕北辙,应该怎公办”。文中涉及“体验”在第十六段,提到“在实验中要避免随意。不要盲目行动而结果适得其反”。因此,答案应为"not take blind steps"