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3. Using the mirrors left on the lunar surface by the Apollo missions, mirrors allowing the Earth –Moon distance to be measured precisely by lasers, it has been determined by scientists that the moon is moving from the Earth at the almost imperceptible rate of three to four centimeters per year .
1) allowing the Earth -Moon distance to be measured precisely by lasers, it has been determined by scientists that the moon is moving 2) allowing that the Earth-moon distance can be measured precisely lasers, scientists have been able to determine that the moon is moving 3) that allow the Earth-Moon distance to be measured precisely by lasers, it was determined by scientists that the Moon is moving away 4) that allow that the Earth-Moon distance can be measured precisely by lasers, scientisls were able to determine that the moon is moving away
這道題我覺得沒有一個是對的, 是不是正確選項GWD沒有背出來? @@ 大家對於這道題有什麼看法呢?
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发表于 2006-11-9 18:59:00
