Radio telescopes have provided valuable information about other stars and about the ( ) fields of other planets in our solar system. ( 章节：2 难度：2)
- A、magic
- B、magnetic
- C、magnet
- D、magnificient
正确答案:B
答案解析:有
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Radio telescopes have provided valuable information about other stars and about the ( ) fields of other planets in our solar system. ( 章节：2 难度：2)
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