22.The red flag looks extremely beautiful _____ the blue sky and white clouds.

问题描述:

22.The red flag looks extremely beautiful _____ the blue sky and white clouds.
A.through B.against C.across D.beyond

题目是那个红旗在蓝天白云下(显得)十分漂亮.
A是通过,比如通过努力啊,通过什么方式.
B是有一种对比的意思,和…比,和…对照; 以…为背景.
我找了个例句:
The mountain looks magnificent against the sky.
在蓝天的衬托下,这座山显得雄伟壮丽.
C是穿过,比如过马路.
D是超出…的范围,比如超出能力的范围.