2. 外语
  3. Light waves and heat waves are all electromagnetic. ______are radio waves.

Light waves and heat waves are all electromagnetic. ______are radio waves.

admin2017-05-11  16
问题 Light waves and heat waves are all electromagnetic. ______are radio waves.
选项 A、Some
B、Such
C、As
D、So
答案D
解析 本题考查“so+动词+主语”这种倒装结构表示两种事物有同一种情况，前后两句是并列句，故选D。
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