现行高一化学(必行)课本第114页有这样一段话:“实验表明,镁不易跟冷水作用,……”这话说明镁能与冷水作用,只是不太容易。但课文紧接着的叙述是:“镁能从水中置换出氢,说明它是一种活泼金属。但它只能跟沸水起反应……”从它强调的““只能跟沸水”的字面理解,该是“镁不能与冷水起反应”,这与上文的说法有矛盾。为确证上述两句话谁是谁非,我设计并做了多次实验,结果都是相同的:将镁粉和去 The current high school chemistry (must be) textbook on page 114 has such a paragraph: “Experiment shows that magnesium is not easy to play with cold water, ...” This shows that magnesium can work with cold water, but it is not easy. However, the following narrative of the text is: “Magnesium can displace hydrogen from water, indicating that it is a kind of active metal. But it can only react with boiling water...” From its literal interpretation of “only with boiling water” This is “magnesium cannot react with cold water,” which is in contradiction with the above statement. In order to confirm the above two sentences who are right and wrong, I designed and did a lot of experiments, the results are the same: the magnesium powder And go