1：某些化学品不该混合在一起，因为它们可能引起剧烈的反应
2：科学家们一致认为更好地了解人脑将有助于人们充分利用其无限的潜能
參考答案:1.Certain chemicals should not be mixed together, because they may cause severe reactions.
2.Scientists have agreed that a better understanding of the human brain will help people make full use of its unlimited potential.
