Question

1. which question would be the best high - level scientific question?

a) who made the first microscope?
b) how long ago did dinosaurs live on the earth?
c) how many giraffes live in africa?
d) does the amount of salt in water affect the temperature at which it boils?

Explanation:

• 选项A（谁制造了第一台显微镜？）和选项C（多少长颈鹿生活在非洲？）是简单的事实性问题。
• 选项B（恐龙在地球上生活了多久？）虽然涉及时间跨度，但也是基于已知化石等证据的相对明确的事实性问题。
• 选项D（水中盐的含量如何影响其沸腾温度？）涉及变量（盐含量）与因变量（沸腾温度）的关系，需要通过实验设计、数据收集和分析等科学方法来探究，符合高水平科学问题的特征，即需要深入的科学探究和对科学原理的理解与应用。

Answer:

D. Does the amount of salt in water affect the temperature at which it boils?