With sufficient scientific information a manned trip to Mars should be _____.
- A.
obtainable
- B.
potential
- C.
considerable
- D.
feasible
D
feasible = that can be done 可行的，可做到的：1、Your plan sounds quite feasible.(你的計(jì)劃聽(tīng)起來(lái)很可行。) 2、It's not feasible to make the trip in one day.(一天內(nèi)要進(jìn)行這次旅行是做不到的。)obtainable可得到的；considerable相當(dāng)?shù)模捎^的；potential潛在的，可能的。
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