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Early men did not have clocks. They were told time by the 【76】______ sun and shadows of trees. At first time, they used
Early men did not have clocks. They were told time by the 【76】______ sun and shadows of trees. At first time, they used
admin
2012-01-16
36
问题
Early men did not have clocks. They were told time by the 【76】______
sun and shadows of trees. At first time, they used 【77】______
sticks placing in the ground instead of trees. They made 【78】______
marks in the ground, and the shadows from the sticks told 【79】______
the time of day. Later, men began to use sundials. Some of 【80】______
sundials were boxes with sticks cast a shadow. Men were 【81】______
able to take the sundial box with them. The mark for noon 【82】______
was very important. The sundials always have to face the same 【83】______
way or the time was wrong. Sundials were good only on sunny 【84】______
days, not on cloud days. They were the first kind of clock. 【85】______
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