题目
The reflected light should sweep slowly along the surface of the earth because the mirrors ________.A. would be operated by solar-powered enginesB. would orbit thousands of miles high to catch the sun’s lightC. could move around the earth at the same speed as the earth turns on its axisD. could be made to adjust their angles
The reflected light should sweep slowly along the surface of the earth because the mirrors ________.
A. would be operated by solar-powered engines
B. would orbit thousands of miles high to catch the sun’s light
C. could move around the earth at the same speed as the earth turns on its axis
D. could be made to adjust their angles
题目解答
答案
D. could be made to adjust their angles
解析
步骤 1：理解问题背景
问题涉及反射光如何在地球表面缓慢移动。这需要考虑镜子的运动和调整方式。
步骤 2：分析选项
A) 由太阳能发动机操作的镜子：这与镜子如何调整角度无关。
B) 镜子在数千英里高的轨道上捕获阳光：这与镜子如何调整角度无关。
C) 镜子可以以地球自转的速度绕地球移动：这与镜子如何调整角度无关。
D) 镜子可以调整角度：这与镜子如何调整角度有关，从而可以控制反射光的移动。
步骤 3：选择正确答案
根据问题背景和选项分析，正确答案是D，因为镜子可以调整角度，从而控制反射光在地球表面的缓慢移动。
问题涉及反射光如何在地球表面缓慢移动。这需要考虑镜子的运动和调整方式。
步骤 2：分析选项
A) 由太阳能发动机操作的镜子：这与镜子如何调整角度无关。
B) 镜子在数千英里高的轨道上捕获阳光：这与镜子如何调整角度无关。
C) 镜子可以以地球自转的速度绕地球移动：这与镜子如何调整角度无关。
D) 镜子可以调整角度：这与镜子如何调整角度有关，从而可以控制反射光的移动。
步骤 3：选择正确答案
根据问题背景和选项分析，正确答案是D，因为镜子可以调整角度，从而控制反射光在地球表面的缓慢移动。