Waves of red light are about twice as long as of blue light.A. thoseB. that C. itD. Ones

发布时间：2020-08-17 08:30:46

Waves of red light are about twice as long as      of blue light.
A. those
B. that
C. it
D. Ones

网友回答

(答案→)A. those
B. that
C. it
D. Ones
解析：考查指示代词。句意：红光的波长是蓝光波长的两倍长。在比较级中，指代比较对象时，单数用that，复数用those，这里的比较对象是waves，故选A。
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