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【单选题】
颜色的明度高低是由物体表面的( )大小来表示的A.
光谱分布率
B.
光的波长
C.
光的反射
D.
光的反射率
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举一反三
【简答题】Watch the video and check YES or NO. Family 1.mp4 Who's at the picnic?
【判断题】Watch the video clip once and decide whether the following statements are true or false. The Moken suffered no casualties though their islands were among the hardest hit during the tsunami.
A.
正确
B.
错误
【简答题】watch the video. Fill in the blanks. The destination of the No. 3 is , and time is .
【简答题】watch the video. Fill in the blanks. The destination of the No. 11 is , and time is .
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