section reading read the text and find the answers to these question
{"Image DocumentName": "Section 4 Reading Read the text and find the answers to these question:", "Image ImageDescription": "Why did early measurements vary? (\u0644\u0645\u0627\u0630\u0627 \u0645\u0628\u0643\u0631\u0627\u064b \u0645\u0642\u0627\u064a\u064a\u0633 \u062a\u064e\u0641\u0627\u0648\u062a\u062a\u0652\u061f) How have measurements become more constant? (\u0643\u064a\u0641 \u0627\u0644\u0645\u0642\u0627\u064a\u064a\u0633 \u0623\u064e\u0635\u0652\u0628\u064e\u062d\u062a\u0652 \u0623\u0643\u062b\u0631\u064e \u062b\u0628\u0627\u062a\u0627\u064b\u061f)", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}