《电大英语》第四册模拟自测题

一、完形填空.(10分) Men first measured time ＿＿1) using a stick in the ground.The length of the ＿＿ 2) shadow would ＿＿3) what time of day if was.＿＿4),the Egyptians used a pillar,＿＿ 5) as a gnomon,and then developed a simple sundial, ＿＿ 6) consisted of a stone with a pointer on it .The stone was placed in an east-west direction,and the shadow of the pointer showed the time.