【題目】—________ it is from our own planet Earth to Mars!

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

A. How soon B. How far

C. How long D. How often

【答案】B

【解析】句意：---從我們地球到火星有多么遠？---是的，乘宇宙飛船到火星要花費數(shù)月的時間。此題考查特殊疑問詞，A.多久以后；B.多遠；C.多長時間；D.多久一次。根據(jù)句意，應(yīng)選B。

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