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---__________ it is from our own planet Earth to Mars!

---Yes, it takes months to travel to Mars by spacecraft.

A. How soonB. How far

C. How longD. How often

 

B

【解析】

試題分析:句意:從我們地球到火星有多遠?乘宇宙飛船到火星旅行需要好幾個月的時間。A. How soon多久?提問in+一段時間; B. How far多遠,提問距離;C. How long多長,提問for+一段時間 D. How often提問多久一次,對頻度的提問根據句意,故選B。

考點:考查疑問詞組的用法。

 

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